Maker’s warranty: Lifetime warranty against defects in materials and workmanship; covers original owner; modifications without ULA’s approval void it; tune-ups and repairs for a fee. ULA Equipment’s terms, read Oct 25, 2026
The 36L ULTRA Dragonfly is the larger version of ULA's Dragonfly travel pack, made from ULTRA fabric. ULA lists 36 L (2,197 cu in), carry-on dimensions of 20.5 x 12 x 7.5 in, a 17 in laptop sleeve, UltraStretch front and side pockets, a removable logo patch and YKK AquaGuard water-resistant zippers, with a maximum load of 25 lb.
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 26–46 L in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
The lightest of the 26–46 L backpacks on record is Gossamer Gear Murmur 36 Hyperlight Backpack (Aluula) at 7.9 oz — 654 g less for $30 more.
The cheapest is Naturehike Rock 2.0 Backpack 45L at $99.99 — $220 less and 321 g heavier.
Main models on the same shelf, compared with the 36L ULTRA Dragonfly on the makers’ published figures; the tick on each bar is the 36L ULTRA Dragonfly.
ULA Equipment
30L Patchless Ultra Dragonfly
3.6 oz lighter (102 g)
$30 less
Gossamer Gear
Murmur 36 Hyperlight Backpack (Aluula)
1.44 lb lighter (654 g)
$30 more
Hyperlite Mountain Gear
Contour 35
14.8 oz lighter (420 g)
$30 more
Not ranked: 20 with no published volume, 1 with no published weight.
See all 25 →
Big Agnes
Causeway 28L
$120 less
1.0 oz heavier (28 g)
Big Agnes
Sweetwater UL 28L
$90 less
2.0 oz lighter (57 g)
ULA Equipment
30L Patchless Ultra Dragonfly
$30 less
3.6 oz lighter (102 g)
Not ranked: 18 with no published list price, 16 with no published volume.
See all 23 →
Hyperlite Mountain Gear
Prism 40
4 L more
3.6 oz heavier (102 g) · $130 more
Naturehike
45L Rock
9 L more
6.4 oz heavier (182 g)
Big Agnes
Sweetwater UL 43L
7 L more
8.9 oz heavier (251 g) · $40 less
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.