Our office chair can satisfy all your daily needs. The highly ventilated mesh back will keep you from getting stuffy when you are using it for a long time. The soft and moderate sponge cushion will fit into your sitting position for a long time. The back and armrest of the office chair are ergonomically designed so that you won't feel tired even after a long period of work. The adjusting lever can help you adjust the height of the seat so that the chair can reach your ideal height. Our computer chairs are suitable for all kinds of occasions, besides office, sitting in our chairs for video games is also a very good choice. Features: 1. Make a chic and practical addition to any office or study 2. Ergonomically designed S-shaped mesh back perfectly contours your back to reduce pressure to waist area 3. Breathable cotton mesh seat cushion to ensure best sitting comfort 4. Swivel mechanism, with gas lift adjustable seat height 5. Extremely mobile and comfortable for sitting over long periods for work 6. Durable plastic armrests 7. Smooth wheels won't scratch floors 8. Require assembly, easy to install Specifications: 1. Material: Mesh & Sponge & Metal Five-Star Foot 2. Color: Black 3. Seat Dimensions: (19.69 x 18.9)" / (50 x 48)cm (L x W) 4. Backrest Dimensions: (16.93 x 17.72)" / (43 x 45)cm (L x W) 5. Adjustable Height: (36.02-39.96)" / (91.5-101.5)cm 6. Weight: 19.84lbs / 9kg Package Includes: 1 x Office Chair (Need to Assemble)