[Comfortable Size for Most People] The inflatable swim ring measures 35 cm (13.78 inches) at the inner ring and 75 cm (29.53 inches) at the outer ring. [This adult swim ring features a retro striped design for summer fun. The smooth and soft inner surface won't hurt your skin.] [High-Quality Eco-Friendly Material] The swim ring is made of PVC, which has excellent pressure and tear resistance. You can easily withstand buoyancy in the water and enjoy your water activities. [User-Friendly Design and Portability] The striped swim ring is equipped with a leak-proof nozzle and a special valve design for easy inflation with an electric air pump or compressor. If the inflator is removed after inflation, the air will not deflate immediately. [The durable inflatable float is perfect for use in swimming pools, beaches, lakes, parties and water recreation. You can relax and enjoy water activities with your guests during the hot summer months.