40 and 55 liter ultralight backpacking packs
$ 164.99
Twenty minutes west of Bishop, CA, the Buttermilks climbing area inspired these award-winning packs. Lightweight and uncomplicated, this pack was designed to carry all your gear and enable fast movement. We use our Z-foam suspension with more weight-conscious materials and construction for these multi-day packs.
TOUGH STUFF: Our super-light 100D ripstop nylon pack body fabric is impregnated with silicone for waterproof strength that won’t wear out or rub off over time. The heavier 420D nylon used for the pack bottom is just plain tough.
SIMPLE COMFORT: Packs don’t have to be complicated to be comfortable. The z-foam back panel and removable frame sheet are shaped to match the curve of your back. Nothing fancy. (Just lots and lots of prototypes).
COOL IT: Poke the z-foam on the back panel (don’t worry, it’s tough stuff) and you’ll see it springs back. That compression/ reaction motion happens as you hike, pumping air through to keep your back cool.
FOAM SWEET FOAM: More foam does not equal more comfort. Super-plush belts and straps look comfy in the store but flatten out under pressure. Comfort happens when pressure is distributed evenly through good design and foam resilient enough to maintain volume under load.
KEEP IT CLEAN: There was a time when packs were judged by how many zippers, buckles and straps they had. We’re glad those days are over so we can concentrate on better ideas like daisy chains that tuck away when you don’t need them.
Fit Chart | Waist | Torso |
Small |
28”- 30” |
16”- 18” / 40cm - 46cm |
Medium |
30” - 32” |
18”- 20” / 46cm - 51cm |
Large |
33” - 36” |
> 20” / > 51cm |
Womens Small |
28” - 30” |
14”- 16” / 35cm - 41cm |
Womens Medium |
30” - 32” |
16”- 18” / 40cm - 46cm |
Womens Large |
32” - 34” |
18”- 20” / 46cm - 51cm |