: Winrise office chairs are designed with professional ergonomics to protect human body while prolonged sitting. The home office desk chair features a divided backrest to decompress the lower back, and the elastic adaptive lumbar support can effectively avoid lumbar suspension, muscle strain, and lumbar spine injury. : The reclining chair can be simply adjusted by one lever - lift it for seat height adjustment - pull it out for reclining, and you can choose 3 tilt angles for your needs. Armrests also can be adjusted within 3' in height. The widened headrest of the desk chair conforms to the curve of the human neck, which can be adjusted up and down, and rotated 60 degrees back and forth. : The comfortable thick seat cushion and backrest of the home office chair adopt a double woven mesh of cowhide. The cushion of the gaming chair is composed of a high-density sponge, which will not collapse after sitting for a long time, protecting your hips.