This ergonomic office chair is made of high quality Nylon, padded armrests, Class 4 gas lift and thick seat. Specification: Ergonomic wider high back offers support for your waist and neck. Adjustable height and 360 degree rotation chair suit for most scene. Soft padded backrest and adjustable armrests provide extra comfort. Wider and thicker seat with comfortable. Include instructions, easy to take together. Package Contents: 1 x High Back Mesh Office Chair 1 x Instructions