[Ergonomic Support Backrest] The ergonomic body-hugging high back provides lumbar support and naturally follows your spine's natural curve. It is tall enough to support your entire spine. The back can be adjusted from 90° to 120°. The ergonomic armrest allows you to put hands on the armrest to relax.[Comfort Design] Ergonomic design helps you maintain a neutral, balanced posture. Well-padded seat, lumbar & headrest cushions make gaming sessions more enjoyable[Retractable Footrest] With the retractable footrest，you can relieve tension on your legs and knees.[Adjustable Chair] You can adjust the 3-inch height to sit with your feet flat on the floor, knees at an angle of 90 degrees to the floor and parallel to the hips. 360° free swivel seat help you find the most comfort position.[Dimension] Size of back: 14 x 28 inch. Size of seat: 14 x 18.5 inch . Seat adjustable height: 43 to 46 inch.PoRible This gaming chair is multifunctional. The ergonomic computer chair with the high-density cushion seat, the high backrest and the wide armrests will become your favorite. Every single part of this chair can be adjusted to your height and body. It is perfect for passionate gamers, but also for office workers who wish to be more comfortable while they work.