This gray ergonomic office chair supports 350 lbs with a 5-point metal base and smooth swivel wheels. The 3"" foam seat and breathable mesh offer lasting comfort. Adjustable lumbar support fits your spine in four directions. Recline backrest 90degree(s)-120degree(s) or lock upright. Flip-up armrests save space by sliding chair under desks. Assembles in 15-20 minutes with included tools. Clean mesh with a soft brush or damp cloth. Ideal for home offices.