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 L alpine expedition pack designed with Nepalese high-altitude guides, with an internal daisy chain to hold one oxygen bottle.
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; other figures against every one of the backpacks. 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 — 659 g less.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $350 less and 34 g lighter.
Main models on the same shelf, compared with the Halka 55 on the makers’ published figures; the tick on each bar is the Halka 55.
Hyperlite Mountain Gear
Prism 40
8.9 oz lighter (253 g)
same list price
Hyperlite Mountain Gear
Headwall 55
1.8 oz lighter (52 g)
$25 more
Gossamer Gear
Mariposa 60 Backpack
10.2 oz lighter (288 g)
$135 less
Not ranked: 20 with no published volume, 2 with no published weight.
See all 31 →
Osprey
Exos 48
$185 less
0.7 oz heavier (21 g)
Naturehike
Rock 2.0 Backpack 45L
$350 less
1.2 oz lighter (34 g)
Big Agnes
Sweetwater UL 43L
$170 less
3.7 oz lighter (104 g)
Not ranked: 32 with no published list price, 16 with no published volume.
See all 11 →
Big Agnes
Sweetwater UL 60L
5 L more
4.4 oz heavier (126 g) · $120 less
Hyperlite Mountain Gear
Halka 70
15 L more
6.8 oz heavier (192 g) · $75 more
Six Moon Designs
Swift V
1 L more
7.6 oz lighter (216 g) · $175 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.