This Homall Gaming Chair extends the full length of the back with support for the shoulders, head, and neck. Our chairs are crafted to perfection and designed to the bodies natural shape, you will find complete comfort with its Furniture Quality PU leather. Specification: Tilt Locking mechanism 90-180 degrees angle adjuster Height-adjustable gas spring cylinder Sturdy metal star base Easy to move with color caster wheels Orthopedically and ergonomically designed Premium PU leather material Headrest pillow and lumbar cushion are included Load capacity up to 300 lbs Dimension: Sitting height: 17.7-20.9 inch Backrest dimension: 22.5″X30.5″(LXW) *Note:Every Homall chair have detailed instruction and easy to setup,helping you finished installation less than 30 minutesSelected 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.