The Osprey Siskin 12L Backpack has one goal: to keep you riding in comfort. The Atilon foam framesheet gives the load structure so the weight can be evenly distributed across your body, while the AirScape backpanel provides excellent airflow between your back and the pack to keep you cool. Osprey included its Hydraulics LT 2.5L Reservoir to ensure you can carry plenty of water with you on your ride, and that your bladder will interface perfectly with the pack. The U-zip main compartment grants you access to internal organization options with plenty of space to store your tools, layer, snacks, and other gear, while hip belt pockets and a sunglass pocket keep small items where you can easily find them. Dual side compression straps eliminate excess space to streamline your pack, or double as extra straps to help the LidLock attachment secure a full face helmet.