High Back Executive Leather Desk Chair, Swivel, Knee-tilt, Gas Lift, Padded Armrest, Black Perforated Breathable Leather Plus Upholstery. Leather Plus is leather that is polyurethane infused for added softness and durability. Pillow Top Design with a perforated center. Padded armrests covered with Caressoft upholstery. Adjustable tilt tension control. Pneumatic gas lift seat height adjustment. Large 27″ nylon base for greater stability. Hooded double wheel casters. Arm Height: 26-29.5″H. Seat Size: 21″W x 20″ D. Seat Height: 19.5″ – 23″H. Overall Size: 27.5″W x 28″D x 45-48.5″H. Weight Capacity: 250lbs. * Optional Chrome base upgrade available for all Boss Executive Chairs.