Features:Premium-quality materials: made of environmentally friendly PVC materials, non-toxic and odorless, long-use non-deformation.Ergonomic design: better fit the human body curve, concave surrounded, sitting for a long time not tired.Four seasons universal: It can be filled with air or water, not cold in winter and not hot in summer.Bottom suction cup design: the bottom with suction cups, so that the cushion is more stable and not easy to slip off.Universal for adults and children: suitable for all spas and hot tubs, comfortable for both adults and children.Specification:Color: blueMaterial: PVCProduct size: 47 * 37 * 15cmPackage size: 15 * 15 * 2cmPackage weight: 183gNote: When the goods are delivered, the gas is released. After getting the goods, they need to be inflated by themselves.Inflating tools are not included in the delivery.Packing List:1 * Inflatable Cushion