About this item: Reservoir Capacity: 1.5L Weight: 9.2 oz (260 g) Cargo Capacity: 0.6 gal (2.5 L) Size: 15.6 x 11.0 x 4.7 inches (394 x 279 Air Channel Back Panel and a redesigned Antidote reservoir compartment. Organizer pocket for essentials. Front and back reflectivity Sternum strap Front and back reflectivity Product description: Compact model to ensure comfortable activities for running or riding. Reflective tape on front and back. Has 2 zippered pockets for safe storage of items while using and staying hydrated. * Does not include internal bladder as it is a comsumable item and because of hygene, germs, and bacteria, bladder needs to be replaced when different people are to use item.