About this item Product Dimensions: Length (25 Inches), Width (26 Inches) & Height (48 to 53 Inches). Primary Material: Ergonomic Co Polymer chair with black contoured mesh back, Strong Plastic Armrest, Chrome plated Metal Base, Pneumatic 5-inch-seat height adjustment & 2-inch-thick padded seat for day long comfort. Tested good for 150 kg maximum weight capacity. Color: Black with certain silver colored parts. Assembly required: Do-it-yourself. (Toolkit & assembly instruction provided in the package). Warranty: 12 Months Warranty for hydrolics and wheels. Tested good for 140 kg maximum weight capacity. Premium Gas Lift-It has passed 120,000 fatigue compression tests,100,000 cycles of weight drop, 300,000 cycles of tilt and much more. Class-3 durable gas lift, fit for up to 140 kg COMFORT & MATERIAL : The breathable mesh back & thick moulded pu seat with fabric material on this office & study chair provides great support while also eliminating heat and moisture with the help of breatheable Mesh build-up keeping your whole body cool and comfortable ADJUSTABLE ARM & ADJUSTABLE HEIGHT.