Sweetcrispy Black Office Computer Desk Chair: Ergonomic High-Back, And Home. ?Comfortable Sitting Experience?The ergonomic office chair with high back is designed to fit the body curves. High-density sponge filled cushion is overwhelmingly soft that you won?t get tired after long-time sitting. The soft lumbar support pillow is specifically for sedentary officers to relieve the pain on the lower back. ?Lockable Reclining Function?Push the lever up and down to lock or unlock the backrest, available for 90-135 degrees of tilt. Collaborate with a retractable footrest, the reclining office chair surely provides a super cosy lunchtime break spot, not only comfy enough for work, but also suitable for reading, game-playing and a short napping. ?Multifarious Adjustment?The height of this 360 swivel desk chair could be easily adjusted by the pneumatic gas cylinder that rises and lowers smoothly and silently. The flexible headrest of the computer chair can also be adjusted up and down, back and forth, as you like to reduce cervical pressure. ?High Quality?Featuring breathable mesh material, the ergonomic desk chair can reduce heat and sweating while the high-density cushion is deformation-resistant for longer use. Padded armrests provide for snug elbow support. ?Solid Construction?Our comfy mesh office chair with 360-degree swivel caster could run smoothly whether on tilt, wooden floors, carpets or other flooring. The strong 5-point base ensures excellent durability and stability with the maximum weight up to 250 pounds. ?Effortless Assembly?The installation manual and required tools are concluded in the package. You may finish the assembly with detailed instruction. If you have any questions, please feel free to contact us.