Product Name:Open water swimming safety PVC buoys Size: 48*29cm Material thickness: 0.35mm Environmental protection PVC buoyancy: maximum 8KG Features:Equipped with inflatable gas nozzle, no storage space required. It can not put anything. Precautions: 1.Before swimming, you can blow through the air nozzle and then make sure there is no leakage by submerging the buoy. 2.Do not damage the airbag by letting sharp objects enter the water; 3. Be careful not to let the connecting rope wrap around your body 4. remain calm and relaxed during emergency use in the water. Hold on tight, do not panic, and And quickly go to a safe area (shallow water, shore) or call for help. Package Includes: 1pc* swimming buoy without storage space