Features: With a breathable mesh cover and comfortable seat cushion, designed for office workers who value stability and comfort. The ergonomic backrest of the office chair mimics the shape of the human spine, reducing your back pain and discomfort. Sponge density - 50gcm3, good elasticity and permeability, dense mesh backrest, breathable and tail -free. Adjustable headrest, armrests, lumbar support, seat height for different body sizes. The sturdy nylon feet and solid metal construction have passed the 150kg pressure test. Specification: Color: Black; Material: Plastic sponge metal; Chrome-plated cross with 5 plastic castors. Delivery includes: 1 x desk chair