KIDS BIKING HYDRATION PACK: CamelBak Kids Mini M.U.L.E. Pack is small enough for kids to carry 1.5L of water. It’s lightweight with a built-in safety whistle, extra storage pockets, and reflective accents for visibility in low-light environments.MORE WATER PER SIP: Crux reservoir delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes preventing leaks simple. The kid-friendly and easy to use on/off switch supplies the water kids need.COMFORTABLE & FUNCTIONAL BACKPACK: Mini M.U.L.E. hydration backpack has a bike tool organizer pocket, a breathable mesh back panel for a cool & comfortable ride, and a stretch overflow pocket perfect for stashing a rain shell or extra layer.KID-FRIENDLY SIZING: This pack has grownup features in a package that fits younger explorers. Our reflective strips and safety whistle make kids easy to spot on the trail. This kid’s backpack for hydration will keep your littles hydrated and happy.