Upgraded anti-leak valve: Each has an upgraded anti-leak valve, which is highly sealed to prevent air leakage. Comfortable use: The wear-resistant thermal insulation foam bottom is suitable for stepping on without bumping. Preventing babies from falling: The thickened inflatable at the bottom effectively prevent the cold on the ground, avoid the rapid drop in water temperature, and prevent babies from falling when swimming or playing in the pool. Product Sizes: 110 * 88 * 33cm; 155 * 108 * 46cm; 181 * 141 * 46cm. High-quality materials: high-strength hot carbon tough PVC layered independent adopts enhanced hot melt technology, which is firm and not easy to break. If the single layer leaks, it will not affect the normal use of the surrounding babies.