This pack has grownup features1.5 liters of water, a bike tool organizer pocket, and zippered compartments for layers and essentials in a package that fits younger explorers. CamelBak has also added reflective strips and a safety whistle to make kids easy to spot on the trail.. . The brand new Crux delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks.. Breathable air mesh back panel for a lightweight, comfortable fit. Reflective accents for visibility in low-light environments. Stretch overflow storage compartment lets you easily stash a rain shell or extra layer. Safety whistle built into sternum strap. Activity: Cycling. User: Unisex. Hydration Capacity: 1.5L/50 fl. oz.. Hydration Type: CRUX?? Reservoir with Standard Exit Port. BPA/BPS/BPF Free: Yes. Quick Link Disconnect: No. Gear Capacity: 1.5L/50 fl. oz.. Pack Weight: 210 g/7 oz.. Dimensions: 35.5 x 19 x 19.5 cm / 14 x 7.5 x 7.7 in.. Fits Torso: 30-40 cm/12-16 in.. Back Panel: Padded mesh. Number Of Exterior Pockets: 3. Imported.