No longer binding! No need for water from the tap! At the joint of the sphere is a small magnet wrapped in silicone. Just open the refillable water balloons and drop them into the water, it quickly fills up and automatically seals with invisible magnetism. These reusable water balloons are made of soft odorless and high-quality silicone, which is non-toxic, odorless, safe, and soft. Don’t worry about injuries. These water bombs can float in the pool with eye-catching colors. Playing outside with friends and family, which can bring you a lot of joys.