HEIGHT ADJUSTABLE. Pneumatic lever under seat provides easy height adjustment from 22" to 32" for an enjoyable, personalized fit. ENHANCED COMFORT. Waterfall seat edge and adjustable foot ring may help improve circulation by reducing pressure points in legs and while seated. Adjustable height back and built-in lumbar support add to the seat's ergonomic benefits. 5-STAR BASE. Black powder coat finish on the heavy-duty, 5-star base helps resist chipping and scratching for an extended professional appearance. The hooded swivel wheels perform well on carpeting as well as smooth surfaces for optimum usability. PRODUCT DIMENSIONS. Finished product dimensions: 26"W x 26"D x 54"H.