[High Quality] Made of high quality PVC material, soft and comfortable, heat and compression resistant, not easy to break and leak [No Slip] There are 4 fixed suction cups at the bottom, to prevent the seat from floating or moving, please fix it completely before use [Easy to Use] Simply use a standard hose nozzle to easily fill or refill through the spa nozzle, easy to fill and remove, and reusable [Size] After filling: 47 x 37 x 15 cm, the hardness and size can be adjusted according to the amount of water filled [Applicable] Suitable for all spas and hot tubs, especially suitable for use as an extra seat when taking a bath. Please ensure that the hot spring water is chemically balanced before use.