Art Director Executive Leather Chair Drafting Height by Alvin. With an extra thick seat cushion and high back that are both covered in beautiful, high-quality buffalo leather, the drafting version of this executive chair is unlike any other drafting chair on the market today.Perfect for the drafting professional or executive seeking the ultimate in quality, comfort, and good looks.Features include arm rests, pneumatic height control, and dual wheel casters on a 26" diameter reinforced nylon base. The extra thick seat cushion is 20"w x 19"d x 3" thick. The backrest is 19"w and rises 20" above the seat. Office model height adjusts from 17"-21". Drafting model includes CK49 height extension kit and adjusts from 24½"-28½".