The breathable mesh backrest with an adjustable waist pillow provides ergonomic lumbar support to prevent back strain and muscle fatigue, while ensuring air circulation and improving comfort. The high back chair allows you to obtain a comfortable seated position by adjusting the seat height and armrest height. User-friendly designed with a height-adjustable headrest which can rotate45 degree, the ergonomic chair supports your head well and relax your neck. Additionally, 360 degree swivel seat helps you better communicate with colleagues around you, which greatly improves your work efficiency. A perfect addition for office, study and other occasions.

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1. High-quality and Durable Material: This office chair consists of breathable mesh backrest and high-resilient sponge, allowing air circulation to keep you cool while learning.
2. Upgrade Upholstered Seat:The seat size is 20.5" x 19.5" (W x D), and U-shaped waterfall design can disperse the pressure of buttock and thigh, and the maximal weight capacity is 264 lbs.

3. Adjustable Backrest From 90¡ã?to 135¡ã: The backrest is tiltable and could be switched from one mode to another, 90¡ã?for sitting mode, 120¡ã?for gaming mode and 135¡ã?for watching movies mode.

4. Adjustable Height of 4 Inch: Gas spring cylinder and convenient lift lever could adjust height from 17.5" to 21.5", meeting your different needs according to different people¡¯s height.
5. Adjustable Headrest: It could effectively support your neck and keep it relaxed, it has 4.7inch adjustable height range and 45¡ãrotation adjustment, finding an optimum to relax your neck.

1. Color: Black
2. Main material: Mesh, sponge, plastic, PU
3. Overall dimension: 28.5" x 29" x 44" - 52.5" (L x W x H)
4. Back size: 20" x 21" (W x H)
5. Seat size: 20.5" x 19.5" (W x D)
6. Seat height: 17.5" - 21.5"
7. Net weight: 36.5 lbs
8. Weight capacity: 264 lbs
9. Package includes:1 x Office chair? ?1 x Instruction