Material: Mesh cloth + sponge Size: 28 * 12 * 12 cm Recommended weight: under 70 kg Style: cylinder, semi-cylinder Colour: Black Quantity: 1 piece 1.High-quality materialsmade of high-density and high-resilient sponge, not too soft or too hard, can support the waist and fit the lordotic curve of the waist. Provide good support and effectively improve posture. 2. Removable and washableThe breathable mesh cloth is soft, you can easily remove it, and it can be washed, and it can be easily installed after drying. 3. Multi-purpose cushionIt can be used not only as a backrest pillow for chairs, but also as a neck pillow and knee pillow.Excellent workmanship-each one is well made and carefully selected. 4. Designed to fit the human bodyCompared with the flat cushion, the cylindrical cushion is more durable and can better fit the lordotic curve of the waist and provide sufficient support for the waist. The elastic fixing strap can be fixed on the chair, it is not easy to run off, and it is adjustable. 5. Carry with youThe cushion is light in weight and easy to carry, suitable for any car seat, wheelchair, office chair or computer chair, family chair or seat on public transportation, such as plane, subway, bus and train senior kayak Medical motorcycle air travel.