Great for youngsters on the go, the CamelBak Kids' Mini-M.U.L.E.® 50 oz. Hydration Pack is made of 210-denier nylon and 70-denier diamond Clarus mesh with DWR and 1,000 mm PU for durability, breathability and quick drying. The hydration pack holds up to 1.5 liters with a 1.5 liter reservoir, so your child has plenty of water to stay hydrated, and includes a phone pocket, bike tool organizer pocket and safety flasher loop. Reflective for visibility in low-light conditions. Kids' Fit mesh harness.