There's nothing like a big climb through pine forest on rocky, rooty trails in toothy treaded trail shoes. Full days on the trail necessitate hydration. As does running the continental divide trail or Ptarmagin Traverse. That's why we built the Hoist Pack a 10 liter, low profile pack just big enough to hold layers, a hydration bladder and enough energy bars for dawn to dusk days on the move. Durable . Lightweight . Zippered Closure with Aluminum Tension Hook Attachment . Breathable Mesh Shoulder Straps . Internal Hydration Bladder Hanger . Internal Hydration Hose Routing . Ice Axe Loop . 100% nylon ripstop, 70D main body 100% nylon ripstop, 210D bottom and sides . Dimensions: 23 14 inch x 13 12 inch x 41 12 inch 53 cm x 32 cm x 15 cm . Volume: 580 cubic inches 9.5 L . Avgerage Weight oz.g: 10.5oz 300g One Size.