Camelbak Products Women's Spark 10 LR Hydration Backpack Ultra-light 3D mesh with Women's Specific Independent Suspension and a 70-Ounce Antidote Reservoir with Quick link system Gel pocket on shoulder harness Slider Sternum strap and removable waist belt Ultra-light materials, media pocket, bike tool organizer pocket, stretch overflow helmet storage, four point compression Reflectivity