Comfort-focused Study Room Liftable Swivel Chair Backrest Boss Chair

3D armrest adjustment: the position of the armrest can be adjusted according to your own requirements, skin-friendly material, multi-angle adjustment. Hollow cushion design: The cushion adopts a hollow design, which is comfort-focused and breathable, and has strong resilience. Innovative design of double backs. The waist protector is more assured, fits the curve of the spine and relieves pressure on the lumbar spine. Comfort-focused neck protection, adjustable up and down. Support the back, strong back elastic support. Chair back elastic reclining: The chair back can be reclined 135° for maximum relaxation. Tilt at 90°-135, close your eyes, and relax a little. Headrest lifting and tilting: adaptive up and down adjustment to protect the cervical spine. The lifting headrest supports the weight of the head, and the tilt function can reduce neck pressure.