Vancel High-Back Gaming Chair for E-Sports With a 25-degree rocking function and a soft PU high back that can be locked at any angle between 90 and 155 degrees, the Vancel ergonomic body-hugging design accommodates a person's natural back curvature. Finding your most comfortable position while working, playing games, napping, or unwinding is made possible by the height-adjustable seat, sideways rotatable, and seven-level height-adjustable armrest. Long periods of gaming or working will no longer cause back pain or exhaustion. Features include a wider chair back and a larger seat cushion. √ Superior PU covering and ergonomic, thicker foam padding. √ Support for the head, back, and lumbar region that is ergonomic √ Vibratory massage function that efficiently relieves lumbar fatigue Maximum Capacity: 300LBS √ Smoothly adjustable height √ Fully adjustable armrests √ Heavy duty chair base with castors for increased stability √ 360 degree swivel √ 90 to 180 degree tilt mechanism √ Easy to use