Kids' Mini M.U.L.E.® 50oz Hydration Pack with Crux® 1.5L Reservoir
Amazon.com : UTEBIT Kids Hydration Backpack, Lightweight Hydration Pack with 1.5L Water Bladder, Insulated BPA Free Water Backpack for Hiking Running Cycling, with Whistle Hydro Water Daypack for 8-15 Years Old :