Camelbak Products Octane 22 LR Hydration Backpack, Black/Lemon Chrome, 100-Ounce Air Mesh back panel with Ultra-light 3D mesh harness Fixed 1" adjustable waist belt with cargo pockets on the hip 4 point external compression 100 oz. Antidote reservoir with Quicklink system Designed to carry extra layers, ultra-light weather protection, trail maps, energy bars, compass, headlamp