Fabric cover on front and back Wide metal frame with cold-cured foam padding for maximum comfort and durability Standard mechanism with rocking function Pillow set included 3D adjustable armrests 2.5 inch casters Class 4 gas lift Recommended comfort rangeHeight: 160 cm - 200 cm; Weight: 68 - 132 kg; BMI: Not to exceed 34 Extra wide construction2 additional inches of width in both, the seat and the backrest vs. the original EX gaming chair, Durable steel frameAKRacing hand-welded metal frame with anti-corrosive coating is built for strength and comfort and warranted to last at least 10 years. Durable and breathable fabric upholsteryHigh quality 100% polyester fabric on front and back is easy to clean and keeps you cool. High-density cold-cured foam fillingCold cured foam provides superior support and keeps it shape for years. Ergonomic flat seat provides support and comfort for all body shapes for long work sessions. Class 4 gasliftClass 4 gaslift is the highest grade gaslift available