3d Air Mesh Fabric 【Ergonomic design】The seat cushion adopts unique U-shaped design to perfectly match the contour of human hip, provide unprecedented fitting effect and ensure no discomfort even if sitting for long 【High Quality with Super Comfort】 — With the exquisite 3D air mesh weaving technology from Germany, the mat contains thousands of honeycomb structures for better breathability and easier drying. The 3D air mesh covering feels much softer and more friendly to the skin and suitable for kids. Durable elastic material will never deform even under great pressure. 5# nylon zipper with hidden design is much stronger and safer without damaging the bathtub 【5-inch Height to Keep Hair Dry】 — Cushion is ergonomically designed to ensure e a comfortable bath without wetting hair. Due to the size as high as 5 inches, kids and moms can easily face all the tubs and enjoy leisure time with whole family without worrying about deep water 【Quick Sink without Displacement】 — The tub booster seat is equipped with 6 weighting parts to be firmly fixed without floating. The non-slip rubber mat can keep it remain stable and secure underwater without frequent adjustments 【Easy Disassembling & Machine Washing】 — We feel so proud of the quality and durability of the tub booster seat. It’s made of a machine-washable cover and filling materials so it’s convenient and easy for washing to keep it clean, then you will get a new cushion for your tub bathing This product can be used in family bathtubs, outdoor hot tubs, spas, swimming pools, hot spring, etc. Whether you are children or adults, you can enjoy luxurious and comfortable relaxation by using this cushion in the water. More than that, it can also be used as a booster cushion on a chair or car seat to support your hips.