A Word from the Manufacturer Alvin and Company has been a leading source of drafting and drawing supplies since 1950, and it continues to meet the evolving needs of its customers with value and innovation. The ever-expanding range of Alvin products includes papercraft, fine arts, hobby and craft, drafting supplies, drafting tables, and more. Alvin serves today"s needs - and tomorrow"s, too - for graphic arts, drafting, and fine arts products. Dedicated to the pursuit of excellence in all aspects of its business, Alvin relies on its employees to create and develop opportunities that set it apart from the competition. * Pneumatic height adjustment range from 23 to 33 inches * Made of molded foam with polypropylene back shell * Black fabric seat * Height- and depth-adjustable backrest * Padded armrests that are width- and height-adjustable * Dimensions: 26L x 26W x 42H inches