Feature: 1. Adjustable: Self adjusting inflatable hot tub chair, hardness and size can be adjusted according to water usage. Easy to fill with standard hose nozzles.This practical design ensures your comfort during your spa session. 2. Dual Purpose: The inflatable cushion is dual purpose and can also be inflated from the bottom water spout. It can be inflated and filled with water. The product has been upgraded to have more suction power. 3. Nonslip: The upgraded version of the suction cup is more slip resistant with the addition of mesh grooves. The suction cups prevent the auxiliary chair from rising and the hot tub cushion from moving. 4. Application: Water resistant back cushion is suitable for home bathtubs, outdoor bathtubs, swimming pools and spas. Its adaptability ensures that you can enjoy comfort and relaxation anywhere! 5. Premium Material: Spa inflatable hot tub cushion is made of premium PVC material, which is not only lightweight and long lasting, but also will not cause any irritation to your skin. Specification: Item Type: Inflatable Spa Chair Size: Approx. 47x37x15cm / 18.5x14.6x5.9in (Manual measurement has an error of 1-3cm) Application: for Family Bathtubs, Outdoor Bathtubs, Spas, Pools Material: PVC. Package List: 1 x Cushion