Extra-large lumbar pillow Memory foam head pillow Up-down adjustable armrests Game-changing Design6 exciting colors for an immersive experience in any setup.2 perfect sizes to ft everyone.52cm Extra-wide plush SeatDesigned with 11cm thick high-density foam, it efficiently absorbs pressure, offering spacious and bouncy sitting for up to 220lbs.Rest Arms at EaseEnjoy an optimal arm and elbow support with the up-down adjustable armrests during mouse movement, typing, and more.Robust ConstructionRugged steel frame, BlFMA 5.1 tested heavy-duty tilt mechanism, and reinforced nylon wheelbase with floor protective castors.Effortless AssemblySlide-in mount brackets and magnetic bracket covers reduce your assembly time, making it an easier experience. Features Tilt adjustment Yes Assembly required Yes Wheel material Nylon Number of wheels 5 wheel(s) Castor wheels Yes Gas lift class 4 Neck rest pillow Yes Tilt angle range 90 - 160° Adjustable armrest Yes Armrest type Hard armrest Armrest Yes Back