Size:after inflation :Inner diameter: 21cm, outer diameter: 50cmUnique DesignUse the latest and most popular design styles, outdoor pool party supplies, the best birthday gifts, summer pool toys gifts for children. Also, each can be a swim tube for a beach or lake. Add more fun to your summer.Lightweight and PortableThe pool buoy is made of high quality PVC material, soft and durable, ready for your every summer pool party Beat the summer heat with the summer fun of swimming pool floats for you and the kids.Beach Pool Party SuppliesThe swimming pool buoy valve adopts double protection of leak-proof mouth and double safety guarantee. It can be inflated with an electric pump/hand pump. After a party or play, it can be deflated for easy transport or storage.Perfect for Summer FunA great beach, pool toy, perfect supplies for kids summer fun party, add fun to pool/beach/ocean/Hawaiian/Carnival/Swimming party. Enjoy summer fun with your kids and family, spend the hot summer together, and make the summer no longer monotonous.Safety TipsDon't sleep too deep when floating in the sea Don't leave your child unattended, even for a second at the water's edge Keep your child safe and prevent accidents.