evo.com | Osprey Hydration Packs > The Osprey Moki 3 Hydration Pack is built to get little riders out having fun on the trail with minimal fuss. A 1.5L reservoir keeps them hydrated, and the lightweight build won't slow them down or wear them out before the fun starts. Small pack, big adventures. Adjustable Sternum Strap With Safety Whistle 12.8" x 8.7" x 5.9" / 32.5 x 22 x 15 cm Reservoir Included Osprey Hydraulics(TM) LS 1.5 L reservoir with quick access to reservoir. Main bluesign(R) approved 100% recycled 100D high-tenacity nylon, DWR treatments made without PFAS Large Zippered Front Pocket With Internal Mesh Organization Pockets | Kid's Osprey Moki 3 Hydration Pack 2026 in Purple | Nylon