Syncro 15, combining advanced materials and our Airspeed suspension,the Syncros are streamlined hydration packs designed for cyclists and hikers who value light weight and ventilation. Integrated high visibility raincover with blinker light patch. LidLock helmet clip. Roomy main compartment with hydration sleeve against back panel. Zippered front pocket with organizer for tools, camera, tire pump, etc. Small zippered pocket keeps keys, wallet, and cellphone handy. Large, stretch mesh side pockets. Heat embossed sunglasses pocket. Reflective details improve nighttime visibility. Magnetic sternum buckle holds bite valve. 3L reservoir included. Reservoir Wt 11 oz 0.31 kg. Inches 19H x 10W x 8D.