Ensure your young rider stays hydrated and safe on the trails with the Osprey Moki 3 Bike Hydration Pack. Designed specifically for biking, this hydration backpack features a quick access reservoir sleeve with an included Hydraulics LS 1.5L reservoir and a hose clip for easy access to water. It also boasts a large zippered front pocket with internal mesh organization pockets to keep gear sorted and stretch mesh side panels to accommodate extra layers. Safety is paramount with reflective logos, a blinky light attachment, and an adjustable sternum strap with a safety whistle. Plus, it's made from bluesign APPROVED high-tenacity nylon and polyester, treated with DWR made without PFAS.