Camelbak Products Octane LR Hydration Backpack, Parachute Purple/Royal Lilac, 70-Ounce Air Mesh back panel, Antidote lumbar reservoir Ultra-light 3-D Mesh harness with gel pocket and Slider Sternum Strap Stash pocket on waist belt for easy access to gel or essentials Designed to carry extra layers, ultra-light weather protection, trail maps, energy bars, compass, headlamp Front and back reflectivity