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 38-liter frameless pack from Gossamer Gear with a roll-top main compartment. The roll-top clips closed across the top, or fastens down the sides with optional side buckles. Gossamer Gear lists a weight of 578 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 27–49 L in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
The lightest of the 27–49 L backpacks on record is Gossamer Gear Murmur 36 Hyperlight Backpack (Aluula) at 7.9 oz — 353 g less for $125 more.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $125 less and 622 g heavier.
Main models on the same shelf, compared with the Skala 38 Backpack on the makers’ published figures; the tick on each bar is the Skala 38 Backpack.
Hyperlite Mountain Gear
Summit 30
4.6 oz lighter (130 g)
$15 less
Gossamer Gear
Grit 28 Fastpack
4.2 oz lighter (119 g)
$45 less
Gossamer Gear
Murmur 36 Hyperlight Backpack (Aluula)
12.5 oz lighter (353 g)
$125 more
Not ranked: 20 with no published volume, 1 with no published weight.
See all 10 →
Gossamer Gear
Fast Kumo 36 Fastpack
$35 less
0.3 oz heavier (8 g)
Gossamer Gear
Grit 28 Fastpack
$45 less
4.2 oz lighter (119 g)
Hyperlite Mountain Gear
Summit 30
$15 less
4.6 oz lighter (130 g)
Not ranked: 18 with no published list price, 16 with no published volume.
See all 8 →
Zpacks
Women's Arc Haul Ultra 40L Backpack
2 L more
0.1 oz lighter (3 g)
Zpacks
Arc Haul Ultra 40L Backpack
2 L more
0.7 oz heavier (19 g)
Hyperlite Mountain Gear
Prism 40
2 L more
14.2 oz heavier (403 g) · $225 more
Not ranked: 21 with no published volume.
See all 11 →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.