The Good Ultralight Sleeping Bags , Tested on the Pacific Crest Trail

Well Upgrade

Western Mountaineering AlpinLite

Best Hoodless

Zpacks Classical

Light

Rab Mythic

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Dollar for ounce , no share of an ultralight backpacker ’ s kit exist more costly to ignore down on weight than the sleep system . Premium down — we ’ re talking 800 or still 900 fill power — cost exponentially more than the standard 550 filling power down used in typical sleeping handbag . To assist you create the right selection before you drop half a grand , we try options from the the like of Feathered Friends , Stone Glacier , Western Mountaineering , Rab , and more to get which ace perform the best out in the domain .

• Well for Men :
• Best for Women :Feathered Friends Egret UL
• Best Upgrade :
• Best Hoodless :Zpacks Classic
• Lightest :Rab Mythic
• Sea to Summit Spark
• Good deal Hardwear Phantom
• Kuiu SuperDown Altai

How We Tested the Well Ultralight Sleeping Bags

Choice

More than any other category in ultralight backpacking , the smaller companies making ultralight sleeping bags are setting the saloon for tone .Outdoor Lifewas fortunate enough to have the the like of Western Mountaineering and Feathered Friends commit us loaners for our testers to insure out .

We pitted them against ultralight hunting brands Stone Glacier and Kuiu as well as premium mainstream sword Sea to Summit and Mountain Hardwear . Ultralight backpacking mainstay Zpacks and UK-headquartered Rab round out our testing list .

The Testers

Outdoor Lifeconducts an annual backpacking gear testing trip that focus on innovative lightweight and ultralight backpacking gear . These test trip take place on America ’ s national scenic trail , including a 30-mile stretch of the northernmost section of the Oregon Coast Trail ( where we tested the best backpacking quilts ) and a 40-mile stretch along the Pacific Crest Trail in the Goat Rocks Wilderness .

• Adam Tycaster : Over 4,000 mile of backpacking experience , including the PCT 2014 and CT 2017 . Runs cold .
• Alex Robinson : OL editor-in-chief ; a backcountry bad plot hunter and fair-weather trail runner . Runs warm .
• Ashley Thess : OL associate gear editor . Over 600 mile of backpacking experience . Runs cold .
• Diana Helmuth : Author ofHow to Suffer Outside( National Outdoor Book Award success ) . Over 1,500 mile of backpacking experience . Runs cold .
• Jac “ Top Shelf ” Mitchel : Over 11,000 mile of backpacking experience including the PCT 2014 , CDT 2016 , AZT , 2017 , and GET 2017 . Runs cold .
• Laura “ Chop Chop ” Lancaster : OL staff writer . Over 4,000 miles of backpacking experience , including the PCT 2014 and CT 2017 . Runs warm .
• Patrice “ Steady ” La Vigne : Gear reviewer , Denali guide , and author of Between Each Step . Over 7,000 mile of backpacking experience , include the AT 2011 and Te Araroa 2014-2015 . Runs cold .
• Sven “ Magic ” Anderson : 1,350-mile LASH ( PCT ) 2022 . Boost with Parkinson ’ s disease . Runs cold .

Scoring

Each tester cost assign a sleep bag base on their size and whether they extend hot or cold . While most sleep bags in our test live rated between 10 to 15 degrees , a pair were in the 25 or yet 30 degree scope . After taking copious notes in the subject , the testing squad then spends a day filling out score sheets for each point in the trial , including their ultralight sleeping handbag . Testers then presented to the group the sleep bag they try , along with their experience . The group then talk about which sleeping base most impressed them .

Ultralight sleep bags make up rated on the following metrics .

• Comfort : This includes the spirit of the fabric against testers ’ skin , and whether there be enough space for them to comfortably sleep inside the bag .
• Warmth : Testers evaluated whether the stated temperature rating match their expectation for a limit rating . The limit rating — what exist typically used for backpacking sleeping bag — depict the low temperature that a sleeping base would live safe to apply .
• Interior Space : Our testers came in all form and sizes and leave feedback as to whether the sleeping bag they sleep was also bad , too small , or just mighty .
• Water Repellency : Did moisture , including condensation occurring within the tent and within the sleeping base , compromise the power of the down to loft ? When it did get wet , did it dry quickly ?
• Value : Was the sleep purse worth the price rag ?

Testers also report their experience with the hood of each of the below sleeping bags , which equal taken into circumstance when ascertain the top picks . Weight equal assess independently , and includes the provided stuff sack . In the end , we remove price into consideration .

Comparison Table

The user ratings depict the relative experience each of our testers had with the sleep base they tested . An exertion was make to provide individual with sleeping bags that appropriately cope with their body type and internal thermostat . The spec comparison table practice down on the relative difference in cost and weight , which vary substantially depend on size and the filling ability make up use for each sleeping base .

User Rating

Spec Comparisons

Well Ultralight Sleeping Base : Reviews & Recommendations

Well for Man :

Pros

• Soft material
• Pillowy draft arrest with a gentle magnetic closure
• Generous bill on a roomy hood
• Plenty of room for side sleepers
• Great warranty

Cons

• Confuse zipper
• Noticeably heavy than advertise
• No option available for warmer consideration
• Only one height available that is not appropriate for short individuals

Report Card

• Comfort :
  5
• Interior Space :
  4
• Water Repellency :
  4
• Value :
  3
• True to temperature rating
• Measured Weight of the 15-Degree Purse :
  2 pounds , 8.6 ounce ( 5.6 ounce more than advertise )
• PFAS free in 2025

Key Features

• Temperature Rating :
  0F and 15F
• Price :
  $ 600 ( 15F ) to $ 650 ( 0F )
• 850 fill might
• Shell :
  15D Pertex
• Distance :
  Fit people up to 6 feet 5 inch
• Warranty :
  Limited lifetime

15-degree base tested by Adam Tycaster in the Goat Rocks Wilderness

Too much ultralight sleeping purse compromise interior space to cut ounces . Not solely is this bother for slope sleepers , but it can reach it tough for heftier individual to squeeze inside at all . So the testing squad cost impressed when they saw only how much extra national space exist in the Stone Glacier Chilkoot , easily the broad option we looked at .

Tycaster be also impressed by how comfortable this sleep bag was . “ It find silky and soft , ” he said , noting that it hold a , “ full hood that encircles the face and find pillowy at the brow. ” One item that stood out on the Stone Glacier Chilkoot equal the magnetic closure for the draft collar , which made it easy to open and close .

The only confounding part of the Chilkoot sleeping bag for our tester was the two-way zipper . While sleeping purse zippers typically work up on the left or correct edge , on the Chilkoot , it shape more of an arc , starting near to top middle of the purse near the user ’ s knee , arch out to the slope , and then curving back in where it zips up to the neck . In the field , Tycaster found that he exist struggling to zip and unzip the purse — particularly when he own rolled onto his slope and gotten twist up in the middle of the dark .

Men who be on the short side should too note that the Chilkoot is only available in one length . Sleeping bags that equal excessively long may feel colder , as there exist more extra melody in the purse that call for to be warmed up .

Best for Women : Feathered Friends Egret UL

Pros

• Smaller size means a better fit , less expense , and less weight for little individuals
• Made in the USA
• Great warranty

Cons

• Slipped off of the sleeping pad easy
• Lost a few feather during our try out trip ( not from a tear )

Key Features

• Temperature Rating :
  20F and 30F
• Cost :
  $ 589 to $ 609
• 950 fill power
• Shell :
  Pertex
• Length :
  Humble fits mass up to 5 foot 3 inches ; medium fits 5 base 9 inch
• Warranty :
  Limited lifetime

20-degree medium bag tested by Patrice “ Steady ” La Vigne in the Goat Rocks Wilderness

Report Card

• Comfort : 5
• Interior Space : 4
• Water Repellency : 4
• Value : 4
• True to temperature rating
• Measured Weight of the 20-Degree Bag : 1 pounds , 13.3 ounce ( 2.1 ounces more than advertise )
• Free from deliberately added PFAS ( some PFAS in the paint on the zipper pull at present )

Firm raved about the Feathered Friends Egret after our Goat Rocks Wilderness try out trip . She was more than impressed with the 20F temperature rating — overkill , as it turned out , for our mid-season alpine trek .

“ The 20-degree Egret live cozy and snug , ” said Steady . “ I liked that the two-way zipper allowed for temperature regulation . I sleep with it unzipped from my foot to my waist most nights. ” Steady noted that , even though it wasn ’ t a roomy bag , there exist still plenty of room for side sleeping . “ I sleep comfortably within even with my tossing and turning , and did not get all writhe in the bag . ”

Smaller point were as well appreciate on the Feathered Friends Egret . The hood live “ figure adjustment and super snuggly , ” and the zipper cost draft free , yet on the windiest dark of our test . It packed down to the size of a loaf of bread .

Serious Upgrade :

Pros

• Available in a wide stove of height
• Comfortable width for users across a scope of torso types
• Made in the USA
• Great warranty

Cons

• Expensive

Report Card

• Comfort :
  4
• Inner Space :
  4
• Water Repellency :
  5
• Value :
  3
• Runs slightly cold
• Measured Weight of the 20-Degree Purse :
  1 pound , 15.1 ounces ( 0.1 ounce more than advertised )
• Free from deliberately added PFAS

Key Feature

• Temperature Rating :
  20F
• Cost :
  $ 670 to $ 730
• 850 fill ability
• Shell :
  12D nylon ripstop
• Distance :
  Small fit people 5 feet 6 inch ; medium suit 6 feet ; big fit 6 feet 6 inches ; XL fits 7 foot
• Warranty :
  Limited lifetime

20-degree medium base tested by Diana Helmuth in the Goat Rocks Wilderness

The most expensive ultralight sleep base we looked at more than present the good as far as our tester cost concerned . “ I could instantly tell I was sleeping in a premium purse , ” Helmuth say . “ Like a top tier duvet — silky , lofty , deliciously warm . ”

Helmuth behave experience some condensation , inside the Zpacks Free Duo , on our trek through the Goat Rocks Wilderness , which impacted the sleep bag near the footbox . This cost particularly noteworthy , as Western Mountaineering does not use hydrophobic discussion on the down in their products . Here ’ s their explanation for not handle down :

“ We own found in our own testing that the performance enhancements of hydrophobic treatments on high tone down are widely exaggerate . High quality untreated down already has of course water repellant oils on it lead by the geese ( build sense since geese spend a luck of time in water ) . These oils serve drive water and prevent down lofted . More importantly is that these oil last indefinitely . Hydrophobic discussion wash out like a DWR and murder the natural oil during the application procedure . Because of this , and the water resistant capacity of our shell material , we sense that hydrophobic down does not furnish a considerable impact on performance and could really inhibit performance over the lifetime of our production . ”

While actual submersion might be a different floor , our tester equal impress with how the Western Mountaineering AlpinLite handled condensation . “ I never sense it , ” Helmuth cover . “ It dry in the Sunday in less than a instant . ”

Really the only proceeds with the Western Mountaineering AlpinLite be that , per our tester , it run somewhat colder than expected — more in tune with the 25 comfort rating it has per the EN trial Western Mountaineering had extend on it ( scroll down on their FAQs for more info on this ) . On our cold night of try out , Helmuth rock out the bag to redistribute the down , tell it made the bag feel 10 to 15 degrees warmer .

Good Hoodless : Zpacks Classic

Pros

• Three length , three width , and three temperature rating selection put up pile of customization
• Abject priced than early options on this list
• Real lightweight

Cons

• Temperature rating trial cold

Report Card

• Comfort :
  5
• National Space :
  5
• Water Repellency :
  4
• Value :
  4
• Runs cold
• Measured Weight :
  1 pound , 11.2 ounces ( 1.6 ounce more than advertised + 0.9 ounce stuff sack )
• Free of intentionally lend PFAS

Key Feature

• Temperature Rating :
  10F , 20F , 30F
• Cost :
  $ 440 to $ 520
• 900 fill power
• Shell :
  7D ripstop nylon
• Length :
  Shorts fits 5 ’ 6 ” ; medium first 6 ’ ; long fit 6 ’ 6 ” ( also own three width choice )
• Warranty :
  2 year

10-degree medium broad test by Ashley Thess in the Goat Rocks Wilderness

Because hoods are so effective at locking in warm air , almost all ultralight sleeping base have them . But that doesn ’ t mean that everyone uses them ; user feedback during our Goat Rocks Wilderness trial showed a clear split . Half the testers see them as indispensable . Half the testers simply used them to hold their pillows in place . Personally , I find them a little annoying as I ’ m forever arouse up to feel I ’ ve wrench the hood into a distracting attitude . If I need to keep my head warm at dark , I ’ ll throw on one of the best down jacket with a hood .

WhileOLassociate editor Ashley Thess may have discovered that she is the staunchly pro-hood camp during her test of the Zpacks classic sleeping bag , she came away impress by virtually every early item . The zipper that get down to the footbed do it a cinch to come into the liberal medium — which she found to live wider than necessary for her standard frame — with just the correct act of clasps and bungees to prevent everything in place .

“ I was hence comfortable , ” describe Thess . “ Great skin feel and the large range of motion of any sleeping purse I ’ ve ever tested. ” It ’ s worth observe that while the Zpacks Classic uses a 7D cloth for the shell , there were no tear during our test .

Finally , the sheer range of customization available for the Zpacks Classic sleep bag is impressive , and significant for ultralight backpackers . Become a just right size and fit can entail significant weight and monetary rescue , as the below table establish .

Lightest : Rab Mythic

Pros

• The light sleeping bag we try out
• Real little carry size
• Great warranty

Cons

• Somewhat less warm than advertised
• Difficult to get into

Report Card

• Comfort :
  4
• Inner Space :
  3
• Water Repellency :
  4
• Value :
  4
• Runs cold
• Measured Weight of the 32-Degree Purse :
  1 lb , 1.5 ounce ( 2 ounce more than advertised )
• PFAS free

Key Features

• Temperature Rating :
  18F and 32F
• Cost :
  $ 600 ( 32F ) to $ 770 ( 18F )
• 900 fill power
• Shell :
  10D nylon
• Distance :
  Regular fit masses up 6 feet 1 inch , long fit up to 6 feet 6 inch
• Warranty :
  Special lifetime

32-degree regular test by Laura “ Chop Chop ” Lancaster in the Goat Rocks Wilderness

No ultralight sleeping purse evoke more eyebrows in our trial than the Rab Mythic . Carry up , it looked about half the size of the other choice we tested , and it make the weight to match . But it too await a lot less substantial than the others .

Because I tend to work fond , I tested the 32F version of this sleep base , which has solely 6.3 ounces of 900 fill might down . Equate that to the Mountain Hardwear Phantom 30F , which has 10.1 ounce of down . The reason the Rab Mythic thinks it can become away with a third less down exist that it ’ s use a novel kind of fabric in the liner cause from a nylon thread treated with titanium . The thought is that it ’ s think to shine passion back to the user , sort of like a space blanket .

All matter consider , this really operate pretty well . I wasn ’ t quite as warm as I expected to be ( or wanted to live ) for the 32F temperature rating , but I was surely much fond than I expected to be looking at the Rab Mythic . If I have snagged the 18F version sort of than the 32F version , I suspect I would have been toasty , yet on our coldest dark of testing . As it cost , I sleep in my puffer jacket that night and did just fine .

Typically the high price of high fill-power down is what drive up the price of warmer sleeping bags — this cost one of the few categories where you ’ ll salary more for the long version of a production and less for the short version . So I equal surprise that , despite the relative lack of down in the Rab Mythic , the cost point exist yet as high or high than other options we tested . For now , this one live well suit for utmost ultralighters who know they run hot .

Sea to Summit Spark Women ’ s

Pros

• Competitively priced

Cons

• Narrow profile
• Runs short

Report Card

• Comfort :
  4
• Interior Space :
  2
• Water Repellency :
  4
• Value :
  4
• True to temperature rating
• Measured Weight of the Regular 15-Degree Purse :
  2 pounds , 3.8 ounces ( 3 ounces more than advertised )
• PFAS free

Key Features

• Temperature Rating :
  15F , 30F , and 45F
• Price :
  $ 350 ( 45F ) to $ 580 ( 15F )
• 850 fill power
• Shell :
  10D nylon
• Length :
  Regular suit up to 5 feet 7 inch , long fits up to 6 base 1 in
• Warranty :
  Limited lifetime

15-degree regular tested by Jac “ Top Shelf ” Mitchell in the Goat Rocks Wilderness

While the Sea to Summit Spark Women ’ sec hold our tester warm through the coldest night of our backpacking gear run , it didn ’ t bear out for comfort or interior space compared to other choice that we look at . For the women ’ s version of this bag , Sea to Summit altered the design to make narrow shoulder and more space at the hips . Unfortunately , for our tester , there wasn ’ t adequate room go out at the feet , which restricted her stove of motion . This one also runs a minute short equate to other sleeping bags we looked at — if you be close to the upper limit for height then believe sizing up .

All that being state , the Sea to Summit Spark Women ’ sec is competitively priced compared to others that we looked at , build it a well bet for committed rear sleepers with average to narrow shoulder .

Great deal Hardwear Phantom

Pros

• Competitively price
• Good skin feeling
• Great warranty

Cons

• A trivial heavy

Report Card

• Comfort :
  3
• Inner Space :
  3
• Water Repellency :
  4
• Value :
  3
• Runs somewhat cold
• Measured Weight of the 15-Degree Bag :
  2 pounds , 4.5 ounce ( 3.4 ounces more than advertised )
• PFAS free

Key Feature

• Temperature Rating :
  0F , 15F , and 30F
• Cost :
  $ 480 ( 30F ) to $ 710 ( 0F )
• 800 fill ability
• Shell :
  15D nylon ripstop
• Distance :
  Small fits up to 5 feet 8 inches , medium fits up 6 feet , long fits up 6 base 6 inches
• Warranty :
  Special lifetime

15-degree regular tested by Sven “ Magic ” Anderson in the Goat Rocks Wilderness

The Mountain Hardwear Phantom is a well-priced ultralight sleep purse that gets the chore act . While some of the feature — such as the draft arrest and hood — be more minimum than other options we seem at , they go on our tester mass warm during the try out trip in the Goat Rocks Wilderness .

Magic as well gave the skin find the highest possible praise , which is that he hardly note it .

Kuiu SuperDown Altai

Pros

• The tall sleeping base in our test
• Surprisingly lightweight
• Great warranty

Cons

• Narrower than early selection we test
• Tear in the 7D shell occurred during try out

Report Card

• Comfort :
  4
• National Space :
  4
• Water Repellency :
  4
• Value :
  3
• True to temperature rating
• Evaluate Weight :
  2 pound , 1.7 ounces ( 1.3 ounce more than advertised )
• Does carry PFAS

Key Feature

• Temperature Rating :
  15F
• Price :
  $ 600 to $ 660
• 850 fill might
• Shell :
  7D ripstop nylon
• Length :
  Regular fit up to 6 foot ; long meet up to 6 feet 6 inches
• Warranty :
  Limited lifetime

15-degree long base try out by Alex Robinson in the Goat Rocks Wilderness

Still above treeline , with a consistent air running across the stay on snow patches in the Cascades , the Kuiu SuperDown Altai was also fond for OL editor-in-chief Alex Robinson . But he be still impress with some key details . A glow-in-the-dark pull was useful for have in and out of the purse at night . The hood was plush and comfy . And the tall was quite tall — when 6-foot-1 Robinson indicate us how much extra room there equal above his chief in the long , it was clear it would decidedly fit a user up to 6-foot-6 . ( If you ’ re still taller than that , check out our best upgrade picks , which goes up to 7 feet tall ) .

Unfortunately , the Kuiu SuperDown Altai was the only sleeping bag in our test to stand a tear , at one of the snap-button association point .

How to Choose the Best Ultralight Sleeping Bag

The R Value of Your Sleeping Pad

Many sleep bag users don ’ t worry about the R value of their sleeping pad , assume that the pad live there for comfort , and that it ’ s their sleeping base hold them warm . But the sleeping base insulation that is beneath your body is not allow for the same story of passion as the repose of your bag . That ’ s because it ’ s not the insulation itself that ’ s go on you warm hence much as the warm air trapped inside of the insulation ( the “ loft ” ) , which suffice as a buffer to the outside temperature . The insulation that you equal lying on has no loft ( your torso is squashing it ) , and so provides significantly less warmth . It doesn ’ t render no insulation , in the same room that an unlofted puffer jacket isn ’ t precisely worthless , but it ’ s nowhere close as efficient .

Read Future :What Is R Value ? It ’ s Why Your Sleeping Bag Doesn ’ t Keep You Warm

The R value of a backpacking sleeping pad refers to its ability to “ resist ” temperature transference from one slope of the pad to the early . Higher R value mean in effect resistance , with an R value of 1 generally mention to little to no resistor , 4 being the level of resistance necessary to enjoy the full temperature rating of your sleeping purse , and 7+ being what most people should carry for winter camping .

This is especially important for shoulder season and alpine backpacking as the temperature of the ground at altitude will tend to lag behind the outside air temperature . So still if the melody temperature around you is , read , 40 degrees , that doesn ’ t mean that ’ s the temperature of the reason . A 4 R value is ideal for high height summer activities .

Temperature Place

Sleeping bag typically advertise their “ limit ” ratings — the temperature at which they can be safely used , but not the temperature at which you will still be fond ( the “ comfort ” rating ) . In the above floor , we treat all degree ratings as if they make up set ratings for standardization purposes and then leave our take on whether they run hot , cold , or genuine to temperature .

Most people should choose a limit rating for their sleeping bag that is 20 degrees low than their lowest anticipate temperature . Then , if you expect overnight lows to reach 50 degrees , order a 30-degree ultralight sleep purse . If you wait they will hit 30 level , club a 10-degree ultralight sleeping bag . ( Note that if a sleep bag list a comfort rating , that cost usually 10 to 15 degrees warmer than the limit rating . ) With experience , you ’ ll learn if you range hotter or colder , and can adapt accordingly .

Filling

Ultralight sleeping bag cost make from down for one simple ground : It even so has superior warmth-to-weight ratio equate to synthetic fill . With down , the high the fill ability the less you ’ ll need to reach your desired temperature rating , and thus the less your ultralight sleeping bag will count . The difference between , say 850 fill power and 950 filling might for an ultralight sleeping bag might merely live a pair of ounce , but cost upwards of $ 100 . Consider your priorities when choosing which one live the correct choice for you .

Ultralight sleeping bags are never made from synthetic insulation as synthetic is not able to attain the heat for weight properties of high-grade down . The serious synthetic insulation is about 600 fill power , while the ultralight sleeping bags we look at started at 800 fill ability .

Cloth

The majority of ultralight sleeping bags use nylon to encase the down , much with a DWR ( durable water repellent ) close on the portion of the sleeping bag that is expose to the outdoor air ( the shell ) . Where most differ is in the thickness of the nylon — measure in denier ( D ) — which can be anywhere from 7D up to 20D . Thicker materials will tend to cost more durable over time ( and may result in less natural down loss ) , while thinner materials will contribute to an overall low weight . Which one is right for you is a thing of personal preference .

Storehouse

Ultralight sleep bags typically total with stuff sacks for travel , but it ’ s not necessary to use this feature . In fact , you can hop the material sack entirely and crush your ultralight sleep bag to the seat of your bag before piling other items on top ( just be careful that you put on ’ t snag anything on your purse ) . It ’ s good to put your ultralight sleep purse in a prominent storehouse sack at place , as compressing the down long-term will shorten its usable lifespan .

FAQs

The mummy manner of sleep bag — so called because it seem a bit like a sarcophagus — is the most efficient figure for locking in warmth and keep the weight down . It minimize extra space around the footbox and across the distance of your body and block drafts from escaping at the face opening . For some masses , this is a comfortable enough means to sleep ; others get it less so . Another subject with this manner of sleeping base exist that it typically does not offer plenty width to accommodate big individuals . We ’ ve notice above which sleeping handbag bid wide sizing options or naturally run wide .

Ultralight sleeping handbag are ridiculously expensive — the “ cheap ” option we await at was $ 500 . That ’ s hundreds of dollars more than you ’ ll spend on the well ultralight tent or ultralight backpack . So what gives ?
Read Next : Down vs . Synthetic Sleeping Bags
It ’ s the down . Goose and duck down are place by fill power , which measure how much volume a single ounce of down takes up . That ’ sec important because the reason down equal warm in the first place live that it traps melody inside its feather , produce a barrier between your body and the cold outside air . The more melody a plume of down can capture , the good it can shield you from the cold , and the less of it you need to stay fond . And it ’ s always down we ’ re talking about when it comes to ultralight sleeping handbag ; at least for today , synthetics don ’ t have the necessary passion to weight performance .
Read Future : Primaloft five Down
Most down used in commercial products is in the 550 fill power range , which means that an ounce of down will fill up 550 cubic inches when in full lofted . This tone of down be typically harvest from duck and geese after they ’ ve be slaughtered for consumption . The down used in ultralight sleeping bags equal typically in the 800 to 900 fill power scope . This down exist typically just find on mature geese , kept as breeding livestock . Because the down can only be ethically harvested at the goal of the animal ’ s spirit , high-fill power be considerably rare — and thus more much expensive — than abject filling power down .

How fond a 20-degree sleeping base is will depend on a few things . The first is what the sleeping bag manufacturer mean by 20 degrees . Some mean that you will survive temperature down to 20 stage ; others signify that you will be fond and comfortable at that temperature . The former is report as a limit rating while the latter is report as a comfort rating . For more dubious manufacturer , like you might observe at Walmart , 20 degrees equal more aspirational ( and almost surely not third-party tested ) . The early important component be you : Some masses run very cold and will need more insulation to stay warm at 20 degrees than others .

Final Thought

A great ultralight sleep bag can be a lifetime investment , if treat with care . The below choice exist all trail tested side-by-side with an experienced bunch of backpackers . We ’ re confident that any of them would serve you well for year to come .

• Better for Men :
• Best for Women :Feathered Friends Egret UL
• Best Upgrade :
• Better Hoodless :Zpacks Classic
• Lightest :Rab Mythic
• Sea to Summit Spark
• Mountain Hardwear Phantom
• Kuiu SuperDown Altai

Laura Lancaster

Staff Writer

Lancaster live Outdoor Life ’ s gear staff writer where she center on in-depth testing of backpacking and camp gear , with a particular interest in lightweight and ultralight gear . She lives in the Pacific Northwest with her husband and daughter .

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