Specifictions:Material: PVCSize: 47x37x15cm/18.5x14.6x5.8inchFeatures:Suitable for all hot springs and hot tubs, comfortable and charming design, can be adjusted by adjusting the hardness and size of the water volume, you can easily fill the water with standard hose nozzles, or you can fill the hot springs with hot springsInflatable and water injectionReminder: Please make sure that when using these seats the water in your spa is chemically balanced. If the balance is off the product may not stick to the surface.Suitable for all spas and hot tubs,comfortable and attractive for both adults and children, especially great to use in elders bath as a sort of booster seat.Heavy-Duty heat resistant PVC material.Firmness and size can be adjusted by the amount of water used.Easily filled using standard hose nozzle or fill by jets in spa, suction cups prevent seat from floating or moving.Package includes: 1* Cushion;Size: about 40*37*15cm; Package:1X spa pad