Maker’s warranty: Limited warranty against manufacturing or material defect for the lifetime of the product; electronics up to two years; covers bought from an authorized Big Agnes retailer or direct; repair center; repair parts sold. Big Agnes’s terms, read Oct 25, 2026
A 28-liter commuter and travel pack from Big Agnes with a large top opening, organizer pockets and a padded laptop sleeve. A pass-through sleeve on the back panel slides over the trolley handle of wheeled luggage. Big Agnes lists a packed weight of 907 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 20–36 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 20–36 L backpacks on record is Gossamer Gear Murmur 36 Hyperlight Backpack (Aluula) at 7.9 oz — 682 g less for $150 more.
The cheapest is Gossamer Gear Vagabond Jet at $130.00 — $70 less and 213 g lighter.
Main models on the same shelf, compared with the Causeway 28L on the makers’ published figures; the tick on each bar is the Causeway 28L.
Gossamer Gear
Fast Kumo 36 Fastpack
11.3 oz lighter (321 g)
$9.95 less
Hyperlite Mountain Gear
Summit 30
1.01 lb lighter (459 g)
$10 more
Gossamer Gear
Grit 28 Fastpack
15.8 oz lighter (448 g)
$20 less
Not ranked: 20 with no published volume, 1 with no published weight.
See all 25 →
NEMO
Resolve 25L Daypack (Women's)
$20 less
5.0 oz heavier (142 g)
Gossamer Gear
Vagabond Jet
$70 less
7.5 oz lighter (213 g)
NEMO
Vantage 20L Day Travel Backpack
$20 less
11.0 oz heavier (312 g)
Not ranked: 16 with no published volume, 9 with no published list price.
See all 9 →
ULA Equipment
36L Patchless Ultra Dragonfly
8 L more
1.0 oz lighter (28 g) · $120 more
ULA Equipment
36L ULTRA Dragonfly
8 L more
1.0 oz lighter (28 g) · $120 more
Gossamer Gear
Aero Jet
7 L more
3.8 oz heavier (109 g) · $25 more
Not ranked: 21 with no published volume.
See all 21 →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.