Maker’s warranty: 2 year limited warranty against product failure caused by manufacturing, material and design defects; repaired when possible or replaced, case by case. Zpacks’s terms, read Oct 25, 2026
A hooded mummy bag filled with 950 fill power Muscovy duck down, with a full-length two-way side zipper, a draft tube and a zipper guard.
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
Against every one of the sleeping bags & quilts in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
Main models on the same shelf, compared with the Mummy Sleeping Bag on the makers’ published figures; the tick on each bar is the Mummy Sleeping Bag.
Zpacks
Solo Quilt
10.2 oz lighter (290 g)
Zpacks
Classic Sleeping Bag
9.8 oz lighter (278 g)
Western Mountaineering
Nanolite Top Quilt
9.0 oz lighter (255 g)
Not ranked: 25 with no published weight.
See all 12 →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.
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).
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.