Buying Guide

A Hooded Mummy, a Quilt, or a Wet-Weather Synthetic?

A fill-power hangtag is the wrong first question. Hooded mummy, quilt, or wet-weather synthetic is the bag. Then shop Gavler's live community ranking.

The Gavler Team·September 15, 2026·6 min read

A fill-power hangtag is not a night. An 850-fill screenshot, a 15 oz stuff-sack photo, and a quilt photographed on a granite slab are how retailers sell the category. Architecture first: a hooded mummy that seals, a quilt that lets the pad be the bottom, or a wet-weather synthetic once down will stay damp.

Get that split wrong and you own a $310 Enlightened Equipment Enigma 20 you asked to stop drafts at the neck — or a $530 Western Mountaineering UltraLite you curse because you wanted 15 oz and no zipper.

The live ranking is on our Best Backpacking Sleeping Bags list. Use this page to pick a lane, then buy from that list. The community ranking story is in The Best Backpacking Sleeping Bags in 2026.

Buy a hooded mummy if you need a seal

A mummy is a hood, a zipper, and insulation under you. You are buying a closed system. You are not buying pad-strap drafts.

The default is the Western Mountaineering UltraLite: 850-plus fill goose down, continuous baffles, ExtremeLite 12D shell, 1 lb 13 oz, 20°F. About $530. Currently first at 9.7 — 36 of 270 votes. CleverHiker called out the draft collar, draft tube, and no-snag zipper. OutdoorGearLab still uses it as the colder three-season benchmark. Switchback Travel treats the hand-built San Jose construction as the reason it stays the measuring stick. Buy it as the first hooded bag most people should want if the bag has to last a decade. Skip it as a quilt. Skip it as a $130 first bag.

The side-sleeper mummy is the Nemo Disco Endless Promise 15: spoon-shaped hip and knee room, Thermo Gills, waterproof footbox, about $290. Currently third at 9.3 — 30 votes. Buy it when a tight mummy wakes you every 90 minutes. Skip it as a 1 lb 13 oz UltraLite. The extra room is ounces.

The mainstream 15° is the REI Co-op Magma 15: 850-fill water-resistant down, up to nine sizes, 21°F EN/ISO comfort / 9°F limit, about 2 lb depending on size. About $379. Currently fourth at 9.2 — 28 votes. OutdoorGearLab and CleverHiker both flag the chest zipper and the fit range. The return is any REI store. Buy it when sizing and a walk-in desk are the product. Skip it as San Jose continuous baffles.

The compressible mummy is the Sea to Summit Spark SP III: 850-plus fill, about $359. Currently sixth at 9.0 — 26 votes. Buy it when the stuff sack has to disappear. Skip it as a quilt.

The ultralight traditional mummy is the Therm-a-Rest Hyperion 20: Nikwax Hydrophobic Down, 1 lb 5 oz, 20°F, about $340. Currently eighth at 8.6 — 22 votes. Buy it when you want a hood without quilt-convert anxiety. Skip it as an Enigma.

The first down bag is the Kelty Cosmic 20: 550-fill DriDown, 20°F mummy, about $130. Currently ninth at 8.4 — 20 votes. Buy it for a first thru-hike or a budget that is not sure it will stay in the sport. Skip it as 850-plus loft.

Do not buy the Western Mountaineering UltraLite hoping a draft collar becomes pad straps you already wanted from a quilt.

Buy a quilt if the pad is the bottom

A quilt is no hood and no insulation under your back. You are buying grams and a pad that actually seals. You are not buying a 20°F mummy you can cinch at the neck.

The default is the Enlightened Equipment Enigma 20: 850-fill DownTek, custom length and width, about $310. Currently second at 9.5 — 34 votes. This is the long-trail quilt the forums standardized on. Buy it when you already sleep warm on a pad and will use the straps. Skip it as a first bag if you toss and hate drafts.

The gram-count quilt is the Zpacks 20F Classic: about 13.7 oz of 900-fill, overstuffed baffles, 3/4 zip, closed footbox, about 19.3 oz with the Dyneema sack. About $395. Currently fifth at 9.1 — 32 votes. Hoodless. Keep it to three-season nights. Buy it when 900-fill overstuff is the spend. Skip it as a 15 oz zipperless quilt — that hangtag is wrong.

Do not buy the Enlightened Equipment Enigma 20 hoping pad straps become a Western Mountaineering draft collar.

Buy a wet-weather synthetic if down will stay damp

A synthetic is loft that survives a wet week. You are buying ounces and bulk. You are not buying an 850-fill stuff sack.

The livable synthetic is the Big Agnes Anthracite 20: FireLine MAX, roomy rectangular-mummy hybrid, about $280. Currently seventh at 8.8 — 24 votes. Buy it for rain, canoe spray, or a tent that condenses. Skip it as a 1 lb 13 oz down mummy.

The budget synthetic is the Marmot Trestles Elite Eco 15: HL-ElixR Eco Micro (recycled), dual zipper, about 2 lb 12.5 oz regular, about $159. Currently tenth at 8.4 — 12 votes. CleverHiker backs the Elite Eco line as the value synthetic — the published quotes are on the 20° sibling, because Marmot's first-party catalog is 20 / 30 / 0, not 15. Buy it when damp loft at $159 is the job. Skip it as the retired Marmot Trestles 15 (rank 99, OutdoorGearLab 58 oz). That bag is still sold. It is not a backpacking roster pick.

Do not buy the Marmot Trestles Elite Eco 15 hoping $159 becomes 850-fill you already wanted from the Cosmic's bigger sibling.

This list is not a pad, a filter, or a tent

A bag is insulation and a draft plan. The ground is a crinkly ultralight vs a quiet mattress vs foam you cannot pop in the sleeping-pad buying guide, then Best Backpacking Sleeping Pads. Do not buy an UltraLite hoping 850-fill becomes an XLite.

Water is a squeeze vs a hang bag vs a UV stick in the water-filter buying guide, then Best Water Filters & Purifiers. The boil is nested FluxRing vs a standalone canister vs fuel without a canister in the backpacking-stove buying guide, then Best Backpacking Stoves. Car-camp kitchens are the camping-stove buying guide. The carry is ventilated overnight vs ultralight vs day/fastpack in the hiking-backpack buying guide, then Best Hiking Backpacks.

Do not buy a $530 mummy to fix a pad you already bottom out on.

Then shop the list

Pick hooded mummy vs quilt vs wet-weather synthetic. Then whether $130 is the ceiling. Then whether a side-sleeper cut or nine sizes is the night.

Everyday hooded mummy: Western Mountaineering UltraLite. Thru-hike quilt: Enlightened Equipment Enigma 20. Spoon mummy: Nemo Disco Endless Promise 15. Mainstream 15°: REI Co-op Magma 15. Gram-count quilt: Zpacks 20F Classic. Compressible mummy: Sea to Summit Spark SP III. Wet-weather synthetic: Big Agnes Anthracite 20. Ultralight traditional mummy: Therm-a-Rest Hyperion 20. First down bag: Kelty Cosmic 20. Budget synthetic: Marmot Trestles Elite Eco 15.

The ranking write-up lives in The Best Backpacking Sleeping Bags in 2026. This page is the architecture split. Do not buy the loudest fill-power sticker.

See all 10 products ranked by the community

Best Backpacking Sleeping Bags

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Common Questions

Buy a hooded mummy if you want a seal and a zipper: the Western Mountaineering UltraLite (850-plus fill, continuous baffles, 1 lb 13 oz, 20°F, about $530, currently first at 9.7 — 36 of 270 votes), the Nemo Disco Endless Promise 15 if a spoon cut and Thermo Gills are the sleep (about $290, currently third at 9.3 — 30 votes), the REI Co-op Magma 15 if nine sizes and a walk-in return are the product (about $379, currently fourth at 9.2 — 28 votes), the Sea to Summit Spark SP III if the stuff sack has to disappear (about $359, currently sixth at 9.0 — 26 votes), the Therm-a-Rest Hyperion 20 if 1 lb 5 oz in a traditional mummy is the brief (about $340, currently eighth at 8.6 — 22 votes), or the Kelty Cosmic 20 if $130 of 550-fill DriDown is the first down bag (currently ninth at 8.4 — 20 votes). Buy a quilt if the pad is the bottom: the Enlightened Equipment Enigma 20 (850-fill DownTek, custom dimensions, about $310, currently second at 9.5 — 34 votes) or the Zpacks 20F Classic if 900-fill and a hoodless hybrid are the grams (about $395, currently fifth at 9.1 — 32 votes). Buy a wet-weather synthetic if down will stay damp: the Big Agnes Anthracite 20 (FireLine MAX, about $280, currently seventh at 8.8 — 24 votes) or the Marmot Trestles Elite Eco 15 if recycled HL-ElixR at about $159 is the ceiling (currently tenth at 8.4 — 12 votes). Architecture first. An 850-fill hangtag does not put a hood on an Enigma, and a $130 Cosmic does not become San Jose baffles because the listing said down.

For most three-season backpackers who want a hood and a zipper, the Western Mountaineering UltraLite — 850-plus fill goose down, continuous baffles, about $530. It currently leads Best Backpacking Sleeping Bags at 9.7, with 36 of 270 votes. CleverHiker, OutdoorGearLab, and Switchback Travel still treat it as the warmth-to-weight benchmark. Thru-hike quilt: Enlightened Equipment Enigma 20. Spoon-shaped comfort mummy: Nemo Disco Endless Promise 15. Mainstream 15° mummy: REI Co-op Magma 15. Gram-count quilt: Zpacks 20F Classic. Compressible mummy: Sea to Summit Spark SP III. Wet-weather synthetic: Big Agnes Anthracite 20. Ultralight traditional mummy: Therm-a-Rest Hyperion 20. First down bag: Kelty Cosmic 20. Budget synthetic: Marmot Trestles Elite Eco 15. Confirm the live community ranking before you buy — votes move. The ranking story is The Best Backpacking Sleeping Bags in 2026.

Buy the UltraLite at about $530 if a hood, a full zipper, and a continuous baffle you can shift are the product — currently first at 9.7. OutdoorGearLab called out the draft collar, draft tube, and the ability to move fill to vent. Buy the Enigma 20 at about $310 if you already sleep on a pad that replaces the underside and you will cinch the pad straps — 850-fill DownTek, custom length and width, currently second at 9.5. A quilt saves the hood and the bottom insulation. It does not save you on a 20°F night if drafts leak at the pad. Do not buy the UltraLite hoping $530 becomes a 15 oz quilt you already wanted from Zpacks, and do not buy the Enigma hoping pad straps become a draft collar you already wanted from San Jose.

Buy down when the forecast is three-season and you can keep the bag dry: UltraLite, Enigma, Disco, Magma, Classic, Spark, Hyperion, Cosmic. High-fill down is the warmth-to-weight and packed-size product. Hydrophobic treatments (DownTek, Nikwax, DriDown) help with tent condensation. They do not make a soaked bag loft like dry down. Buy synthetic when the week is rain, canoe spray, or a leaking tent: Anthracite 20 or Trestles Elite Eco 15. FireLine MAX and HL-ElixR keep loft when damp and dry faster. You pay ounces and bulk. Do not buy the Elite Eco hoping 2 lb 12.5 oz becomes a 1 lb 13 oz UltraLite, and do not buy the UltraLite hoping 850-fill becomes insulation you can wring out.

Buy the Disco at about $290 if you sleep on your side — spoon-shaped hip and knee room, Thermo Gills, waterproof footbox, currently third at 9.3. It is heavier than a tight mummy at the same rating. Buy the Magma 15 at about $379 if fit options and a walk-in REI return are the product — 850-fill, up to nine sizes, 21°F EN/ISO comfort / 9°F limit, currently fourth at 9.2. OutdoorGearLab and CleverHiker both flag the Magma's sizing and draft details. Do not buy the Disco hoping spoon room becomes nine catalog sizes, and do not buy the Magma hoping differential baffles become Thermo Gills you already wanted at 2 a.m.

Buy the Enigma 20 at about $310 if custom dimensions and a decade of long-trail reports are the product — currently second at 9.5. Buy the Classic at about $395 if 900-fill overstuff and a 3/4-zip hoodless hybrid are the grams — about 19.3 oz with the Dyneema sack, currently fifth at 9.1. The Classic is not a 15 oz zipperless quilt. There is no hood. Keep it to three-season nights. Do not buy the Enigma hoping $310 becomes 900-fill overstuff, and do not buy the Classic hoping a missing hood becomes an UltraLite draft collar.

The Kelty Cosmic 20 at about $130 is the current-gen down answer — 550-fill DriDown, 20°F mummy, currently ninth at 8.4 with 20 votes. Buy the Marmot Trestles Elite Eco 15 at about $159 if synthetic loft in the wet is the job — HL-ElixR Eco Micro, dual zipper, currently tenth at 8.4 with 12 votes. The old Trestles 15 is retired from the live ranking (rank 99) at an OutdoorGearLab-measured 58 oz — do not buy it as a backpacking bag. Do not buy the Cosmic hoping 550-fill becomes 850-plus you already wanted from Western Mountaineering, and do not buy the Elite Eco hoping $159 becomes a 20° Marmot catalog packshot that does not exist.

Buy the Hyperion 20 at about $340 if 1 lb 5 oz and Nikwax Hydrophobic Down in a traditional mummy are the brief — currently eighth at 8.6. Buy the Spark SP III at about $359 if the compression story is why you opened the tab — 850-plus fill, currently sixth at 9.0. Both are hooded bags, not quilts. Skip them as an Enigma. Skip them as a $130 Cosmic. Do not buy the Hyperion hoping 1 lb 5 oz becomes pad-strap quilt drafts you already wanted, and do not buy the Spark hoping a Nalgene-sized stuff sack becomes a 20°F hood you already have on the UltraLite.

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