For those longer rides when you'll need more water, the CamelBak® Ratchet 3L Hydration Pack is the perfect choice. The 3L Crux™ reservoir, delivering 20% more water per sip, features an ergonomic handle for easier refilling and an on/off lever to prevent leaks. A breathable mesh back panel offers ventilation to keep you cool, and side compression straps, a sternum strap, and a removable waist belt keep this hydration backpack tightly secure while you ride. The Ratchet has a small zip pocket for necessities, and a stretch overflow pocket to hold layers. External hooks are designed to secure your helmet without restricting access to the biking backpack's contents, and reflective accents improve visibility in low-light conditions. Weighing in at only 10 oz. when empty, the pack is designed to comfortably fit torsos from 17"–21", and has a gear capacity of 3L. 17.3"H x 8.3"W x 7.1"D. Manufacturer model #: 1297601000.