【Comfortable Seating】: S-shaped backrest, the seat back thickened sponge pad, designed in line with the curvature of the human back, protects your neck and spine can reduce the fatigue caused by your long hours of work. 【Adjustable】: Adjust the wrench under the seat and turn the backrest can be tilted and locked 90 to 140 degrees to suit any rest mode you want, eject the pedals from below to relax your legs and completely relax. 【Optimal Comfort】: Padded armrests give comfort and support for you... شاهد