Boss Office Products Perfect Posture Deluxe Office Task Chair without Arms, Black

Thick padded seat and back with built-in lumbar support Waterfall seat reduces stress to legs Adjustable back depth Pneumatic seat height adjustment 5 star nylon base allows smooth movement and stability Hooded double wheel casters MAS Certified Green for low VOC emissions Assembly required Product Dimensions: 25.5" W x 25" D x 34.5-40" H Product Weight: 18 lbs. Seat Dimensions: 18.5" W x 17" D x 18"-23.5" H Weight Capacity: 275 lbs.