Crafted From Soft Silicon, Which is Odorless, Safe & Eco Friendly. Reusable Design Reduces Cleaning Time, No More Broken Water Balloons to Pickup. with the Latest Sealing Technology, Its More Service & has Better Sealing Performance Than Magnetic-technology. Its Sealing Performance Will Not Fade After Many Blistering Day of Use. Doesnt Require Filling From a Splashing Faucet, Just Open & Immerse It in the Water & Close with Both Hands Gently to Leave a Gap at the Connection of Sphere to Quickly Fill the Water Within 2 Seconds. It Will Open Immediately with a Slight Impact. Allows You to Throw Water Bombs Non-stop & Enjoy More Fun in Less Time. Bring Childrens & Teens a Lot of Happiness for Delightful Play at Park, Backyard, Bath, Party, Swimming Pool, or Beach.