360° swivel ergonomic chair is your most cost-effective choice for your office and home. A soft sponge-padded seat and breathable mesh backrest give you a cool and comfy seating experience even during the hot weather. A curved backrest with lumbar supports can reduce your fatigue after long-time sitting. Adjustable seat height to your variable needs. Five wheels can be rotated and rolled in all directions, which is convenient for multitasking. Tilting design helps you recline for better relaxation after hard work. This durable and sturdy mesh chair is ready for your long-term use. SPECIFICATION: Material: steel, iron, PP, nylon mesh, foam, nonwoven fabric, composite boardsColor: Gray, Black, Purple, Gray, Gray, Blue, RedOverall dimension: 24 x 23.6 x (34.5-38.2)"(LxWxH)Adjustable seat height: 13.8-17.7"Backrest height: 18.1"Seat size: 20.7 x 20 x 2.8" (LxWxThickness)Maximum load capacity: 300lb Please see the image for exact measurements.