KOLLIEE Mid Back Mesh Office Chair Ergonomic Swivel Black Mesh Computer Chair Flip Up Arms with Lumbar Support Adjustable Height Task Chair

The office chair has an adjustable height seat, but the other features like back tilt and handle height are fixed. Assembly is simple with printed and video instructions available. Some customers experienced problems with the nitrogen cartridge under the seat and it was advised to replace the part. The chair comes unassembled and can't be purchased pre-built. Some customers found the chair to be suitable for a short time, while others had issues with the suspension crapping out. The chair is suitable for people under 6'3", but may not provide enough cushioning for extended periods sitting.