agoracer gaming chair office chair high back computer chair pu leather desk chair pc racing executive ergonomic adjustable swivel task chair with headrest and lumbar support (red) deerhunter selected material:high density shaping foam,more comfortable,elasticity resilience and service life;1.8mm thick steel frame,more sturdy and stable;pu leather,skin friendly and wear-resisting. upgraded configuration:class-3 gas lift verified by sgs,durable,reliable and supports up to 300lbs;rubber casters,rolling quietly and tested by 1000 miles rolling. dimension:size of back: 22.5"x30.5"(lxw),size of seat: 19.8"x20.5"(lxw),seat adjustable height:17.3-21.5 inch. multi-function:360 degree swivel and multi-direction wheels,load capacity:300-pound maximum weight capacity.recline function;between 90 - 180 degree.rocking function:chair can rock back and forth when you adjust the knob beneath the seat. wide usage: this homall gaming chair is suitable for you to play computer games, watch tv, do the work and have a rest. it will make your space more modern and elegant.