Pleather cover on front and back (Onyx) / Top grain leather on front / pleather on back (Onyx Deluxe) All-metal frame with 100% more cold-cured foam for maximum comfort and durability Flat seat Advanced mechanism with Rock It & Lock It function Pillow set included 4D adjustable armrests 2.6 inch casters Class 4 gas lift Manufacturer recommended comfort rangeHeight: 160 cm - 200 cm; Weight: 68-130 kg; BMI: Not to exceed 34;Extra-large size steel frameHand-welded and heavy duty with anti-corrosive coating, this wide frame is built for strength and comfort.Ergonomic traditional style flat seatThe ergonomic flat style seat provides upper leg support and has extra width to accommodate large and tall body types.Deluxe genuine Brazilian leather upholsteryThe chair is upholstered with ultra-soft, imported Brazilian full-grain leather. Full-grain is a heavy-duty leather that will develop a rich patina as it ages, looking more beautiful over time.High-density cold-cured foam fillingCold cured fo