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
A smaller-volume version of ULA's Circuit: 48 L (2,929 cu in) in ULA 400 Robic nylon ripstop, with a removable Top-Y and bottom strap system. ULA lists it at 37.5 oz (1,063 g) and recommends loads under 35 lb (15.9 kg).
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 →
Against every one of the backpacks in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
Main models on the same shelf, compared with the Circuit SV on the makers’ published figures; the tick on each bar is the Circuit SV.
ULA Equipment
XS Circuit
0.9 oz lighter (25 g)
same list price
ULA Equipment
30L Patchless Ultra Dragonfly
10.1 oz lighter (286 g)
$10 less
Gossamer Gear
Mariposa 60 Backpack
4.1 oz lighter (117 g)
$15 more
Not ranked: 2 with no published weight.
See all 66 →
NEMO
Resolve 25L Daypack (Women's)
$120 less
0.5 oz lighter (14 g)
Six Moon Designs
Swift V
$25 less
1.6 oz lighter (45 g)
Gossamer Gear
Aero Jet
$75 less
1.7 oz lighter (47 g)
Not ranked: 34 with no published list price.
See all 48 →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.