The men's Osprey Siskin 12 cycling backpack has a specially reinforced AirScape™ back system with foam ridges providing excellent ventilation. This Osprey backpack is equipped with a water bag with a outlet for the shoulder strap. Offers a traditional helmet fit thanks to the LidLock system in the front. * volume: 12 L * material: 100% recycled 400D high-strength nylon * DWR treatment produced without PFA * dimensions: 47 x 23 x 7 cm, weight: approx. 0.7 kg * bluesign® product – environmental protection and safety during production process * back zipped pocket with internal outlet for shoulder strap (reservoir is not part of the backpack) * front pocket with two-way zip, inside mesh pocket with carabiner for keys, zipped pocket and one open compartment * front freely accessible pocket with fastening two buckles * LidLock™ system for attaching the helmet to the bike * front flasher loop * reflective elements, hanging loop, compression straps * specially reinforced AirScape™ back system with foam ridges (provides excellent ventilation) * breathable shoulder straps are height adjustable * adjustable chest belt with magnetic mouthpiece holder (attachment of the reservoir tube to the magnet of the strap) * adjustable unreinforced waist belt (two zipped pockets) * rucksack, sports, cycle