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 40 L ski-mountaineering pack designed with skier Cody Townsend, with quick access to safety and climbing tools. Made with Dyneema Woven Composite 5.0.
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 28–52 L in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
The lightest of the 28–52 L backpacks on record is Gossamer Gear Murmur 36 Hyperlight Backpack (Aluula) at 7.9 oz — 1,025 g less and $150 less.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $400 less and 50 g lighter.
Main models on the same shelf, compared with the Crux 40 on the makers’ published figures; the tick on each bar is the Crux 40.
Hyperlite Mountain Gear
Prism 40
9.5 oz lighter (269 g)
$50 less
Hyperlite Mountain Gear
Waypoint 35
1.29 lb lighter (584 g)
$120 less
Hyperlite Mountain Gear
Aspect 32
1.05 lb lighter (476 g)
$130 less
Not ranked: 20 with no published volume, 1 with no published weight.
See all 40 →
NEMO
Resolve 35L Active Daypack (Women's)
$280 less
0.1 oz lighter (3 g)
NEMO
Resolve 35L Overnight Backpack (Women's)
$280 less
0.1 oz lighter (3 g)
Osprey
Exos 48
$235 less
0.2 oz heavier (5 g)
Not ranked: 21 with no published list price, 16 with no published volume.
See all 32 →Osprey
Exos 48
8 L more
0.2 oz heavier (5 g) · $235 less
Naturehike
Rock 2.0 Backpack 45L
5 L more
1.8 oz lighter (50 g) · $400 less
Big Agnes
Sweetwater UL 43L
3 L more
4.2 oz lighter (120 g) · $220 less
Not ranked: 21 with no published volume.
See all 10 →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.