Maker’s warranty: Manufacturing defects, within one year, within the United States; covers the purchaser; discounted third-party repair (Rugged Thread). Gossamer Gear’s terms, read Oct 25, 2026
A 60-liter pack from Gossamer Gear in cut- and tear-resistant recycled Robic nylon, with many pockets for organizing gear. Gossamer Gear sizes it for long trips and for carrying a bear canister, and lists it at 33.4 oz (946 g).
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 42–78 L in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
The lightest of the 42–78 L backpacks on record is Zpacks Women's Arc Haul Ultra 50L Backpack at 1.29 lb — 360 g less.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $215 less and 254 g heavier.
Main models on the same shelf, compared with the Mariposa 60 Backpack on the makers’ published figures; the tick on each bar is the Mariposa 60 Backpack.
Gossamer Gear
Gorilla 50
2.2 oz lighter (61 g)
$40 less
Zpacks
Nero Classic Backpack
1.47 lb lighter (665 g)
Zpacks
Women's Arc Haul Ultra 50L Backpack
12.7 oz lighter (360 g)
Not ranked: 20 with no published volume, 2 with no published weight.
See all 18 →Gossamer Gear
Gorilla 50
$40 less
2.2 oz lighter (61 g)
Six Moon Designs
Swift V
$40 less
2.5 oz heavier (72 g)
Big Agnes
Sweetwater UL 43L
$35 less
6.5 oz heavier (184 g)
Not ranked: 29 with no published list price, 16 with no published volume.
See all 8 →
Zpacks
Arc Zip Ultra 62L Backpack
2 L more
8.7 oz lighter (246 g)
Zpacks
Women's Arc Zip Ultra 62L Backpack
2 L more
9.5 oz lighter (268 g)
Zpacks
Arc Pro 70L Backpack
10 L more
10.6 oz lighter (301 g)
Not ranked: 21 with no published volume.
See all 9 →Side by side on weight, list price and cost per ounce.
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.