Specs: Dimensions: 17.72 x 9.84 x 8.66 in Weight: 9 oz. Hydration capacity: 51 oz. Features: Arete 14 hike pack provides enough room for your essential items Adjustable sternum strap offers helpful stability on trails 1.5L Crux Reservoir ensures easy hydration on the move Breathable air mesh panels and straps are designed to keep you cool on the hottest hikes 3D vent mesh harness is lightweight and breathable with added cargo space Laptop sleeve included Secure phone pocket is conveniently located with a zipper closure with secure zip access Stretch overflow pocket lets you quickly stash or shed an extra layer