With over 54 years of experience, Alvin is one of the primary sources for drafting supplies and drawing equipment in the country, Together with this core group of products, we continue to meet the needs our customers with our expanding range of fine art, hobby and craft supplies, our large selection of drawing room furniture, and our wide assortment of exclusively-designed products, Black, Sleek and stylish, Finely crafted, Width-adjustable padded arm rests, Pneumatic height adjustment from 18"" to 22"" and a 24"" diameter, Reinforced nylon base with hooded casters, Extra-thick seat cushion is 20""W x 19""D x 3"" thick, Spring-adjusted tilt mechanism, Vented mesh backrest is 19"" wide, rises 21"" above the seat, and has a spring-adjusted rocking mechanism that can be locked into the upright position, Padded lumbar support can be adjusted up and down for comfort SKU: ALV6370