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 55-liter pack from Hyperlite Mountain Gear for multi-day backcountry ski and snowboard touring, with an exterior pocket for avalanche tools, external pockets for safety gear and several tool attachments. Hyperlite lists 41.7 oz (1,182 g) in size Medium.
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
Packs are sized by torso length, not height. How to measure yours →
Weight and price against the backpacks of 39–71 L in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
The lightest of the 39–71 L backpacks on record is Zpacks Women's Arc Haul Ultra 40L Backpack at 1.27 lb — 607 g less.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $375 less and 18 g heavier.
Main models on the same shelf, compared with the Headwall 55 on the makers’ published figures; the tick on each bar is the Headwall 55.
Hyperlite Mountain Gear
Prism 40
7.1 oz lighter (201 g)
$25 less
Gossamer Gear
Mariposa 60 Backpack
8.3 oz lighter (236 g)
$160 less
Big Agnes
Sweetwater UL 43L
1.8 oz lighter (52 g)
$195 less
Not ranked: 20 with no published volume, 2 with no published weight.
See all 28 →
Naturehike
Rock 2.0 Backpack 45L
$375 less
0.6 oz heavier (18 g)
Big Agnes
Sweetwater UL 43L
$195 less
1.8 oz lighter (52 g)
Hyperlite Mountain Gear
Halka 55
$25 less
1.8 oz heavier (52 g)
Not ranked: 32 with no published list price, 16 with no published volume.
See all 13 →
Six Moon Designs
Swift V
1 L more
5.8 oz lighter (164 g) · $200 less
Big Agnes
Sweetwater UL 60L
5 L more
6.3 oz heavier (178 g) · $145 less
Gossamer Gear
Mariposa 60 Backpack
5 L more
8.3 oz lighter (236 g) · $160 less
Not ranked: 21 with no published volume.
See all 16 →Ultralight backpacks ranked by maker-published weight: 40 models. Lightest: Gossamer Gear Murmur 36 Hyperlight Backpack (Aluula) at 7.9 oz (225 g).
Six backpacking packs from 45 to 68 L: how to fit one, then their published volume, frame, load range, weight and list price, with a reason to skip each.