Maker’s warranty: Manufacturing defects are repaired, replaced or refunded (no term stated); covers original purchaser from an authorized dealer; not purchases from third-party sites (Amazon, eBay, Craigslist); paid repairs. Hyperlite Mountain Gear’s terms, read Oct 25, 2026
A 20°F mummy bag filled with 1000 fill power gray goose down with a DWR finish. Its three-dimensional baffles loft to 2.75 inches, per Hyperlite Mountain Gear.
Figures with a source link to the page they were read from, with the date we checked it.How we get these figures →Wrong figure? Tell us
Weight and price against the sleeping bags & quilts rated 10°F to 30°F in the RidgeNote register with a published figure; other figures against every one of the sleeping bags & quilts. Manufacturer-listed; sources and dates are on this page.
The lightest of the sleeping bags & quilts rated 10°F to 30°F on record is Zpacks Solo Quilt at 11.8 oz — 417 g less.
The cheapest is Sea to Summit Boab Synthetic Sleeping Bag at $124.00 — $526 less and 475 g heavier.
Main models on the same shelf, compared with the 20-Degree Mummy Bag on the makers’ published figures; the tick on each bar is the 20-Degree Mummy Bag.
Sea to Summit
Spark Pro 30
4.7 oz lighter (133 g)
$101 less
Hyperlite Mountain Gear
Short / Blue/Gold
4.4 oz lighter (125 g)
$120 less
Hyperlite Mountain Gear
40-Degree Quilt
12.1 oz lighter (344 g)
$220 less
Not ranked: 25 with no published weight.
See all 16 →
Stone Glacier
Chilkoot 32° Quilt
$251 less
3.9 oz lighter (111 g)
Hyperlite Mountain Gear
Short / Blue/Gold
$120 less
4.4 oz lighter (125 g)
Sea to Summit
Spark Pro 30
$101 less
4.7 oz lighter (133 g)
Not ranked: 59 with no published list price.
See all 18 →
Therm-a-Rest
Parsec 20°F/-6°C Down Sleeping Bag
rated 2°F warmer
2.4 oz heavier (68 g)
Feathered Friends
Petrel UL 10 Women's Sleeping Bag
rated 10°F warmer
3.3 oz heavier (94 g) · $19 more
Sea to Summit
Spark Pro Down Sleeping Bag - Incorrect Packaging (Like New)
rated 4°F warmer
3.9 oz heavier (110 g)
Not ranked: 25 with no published temperature rating.
See all 25 →Sleeping bags rated 15 to 25°F ranked by maker-published weight: 22 models. Lightest: Therm-a-Rest Vesper 20°F/-6°C Down Quilt at 1.21 lb (550 g).
Sleeping bags and quilts rated 26 to 35°F ranked by maker-published weight: 16 models. Lightest: Zpacks Solo Quilt at 11.8 oz (335 g). Median 1.39 lb.
How to read a temperature rating, why fill weight matters more than fill power, per-size prices, and what the makers publish for the Kelty Cosmic 20, the Western Mountaineering line, NEMO, Sea to Summit, Mountain Hardwear and Therm-a-Rest.