- Patent-pending ergoACTIV suspension with OpenAir backpanel
- Top-load access with fixed top pocket
- Soft, breathable 3D mesh on hipbelt and shoulder straps
- Hipbelt stash pocket, side stretch pockets and front compression stretch pocket
- Trekking pole/ice axe loops
- Hydration compatible
With the Black Diamond Boost backpack and its ergoACTIV suspension you can carry all the essentials for a spectacular day of outdoor action, knowing you’re covered if you want to push a little farther.
Materials are 210d nylon Ripstop, 400d nylon Twill.
Size MD: torso length 17.5 to 20.5", waist 29 to 34"
Size LG: torso length 19.5" to 23.5", waist 34 to 39"
Measure the length of your spine from C7 vertebra (the knobby bone at the base of your neck) to level with your iliac crest (the top of your hip bones).

Volume
Medium: 1950 ci / 32 L
Large: 2075 ci / 34 L
Weight
Medium: 2 lb 14 oz / 1.3 kg
Large: 3 lb 0 oz / 1.37 kg