Soft and comfortable polyester cushion. - Size: 40cm diameter, 20cm thickness Thank you for viewing. I haven't used it much since I bought it. I will wash it before listing it. It's a fluffy and soft cushion that feels great. Description ⇩ Uses fluffy filling. The stretchy cover provides a soft and comfortable feel. The shape of the gusset has been designed to be used as a backrest. If you place it on the back of a chair with the narrow part of the gusset at the top and bottom, the cushion that comes out from the sides will support your arms. Also, if you place it vertically on the backrest, it will gently support your back and waist, allowing you to relax. It's also perfect for relaxing in the living room, placing it under your chest, or resting your head on it. It can be washed in your home washing machine. 【Soft and Mochi-Mochi Texture】 The filling is a blend of two types of cotton with different fiber thicknesses to create a soft and mochi-mochi elasticity. The cover fabric is made of polyester mixed with elastic polyurethane, selecting a soft, stretchy fabric that conforms to the shape without compromising the mochi-mochi feel inside.