High quality material: Diving toys are made of EVA material, non-toxic, safe, anti-aging, durable No battery required: Just push the stingray into the water, after releasing the hand, the fish will swim forward, mainly relying on water pressure to start, no battery is required. Buoyancy principle: The deeper the diving toys are pushed into the water, the more it will float according to the buoyancy principle Adjustment mode: The Stingray diving toy can adjust the toy float by closing or opening, rotating in the water, turning left, turning right. Application: Summer Underwater Glider , kids can play in swimming pool, water park, bathtub, sea or any other places. Size: 30*19cm Blue color Quantity delivered: 1 piece