The product is made of flocked PVC materials and equipped with device for filling air. It is convenient to operate, and can prevent or cure bedsore effectively. It is very light, so it can be carried anywhere easily. The name of the product : Anti Decubitus Cushion(round) Pressure range: under 10Kpa Inflated size: Ǿ39cm and 10.5cm thickness Material: 550 micron pellicle flocking Endurable weight: 100kg The name of the product : Anti Decubitus Cushion(square) Pressure range: under 10Kpa Inflated size: 44cm×42cm×10cm Material: 550 micron pellicle flocking Endurable weight: 100kg