• An antimicrobial compound and UV inhibitor are incorporated in every seat and back during the manufacturing process. It is not a topical coating that will wear off. • Features include a soft-touch pneumatic seat-height adjustment, fixed rearward seat tilt of 6°, backrest tilt and backrest height adjustment. • Has superior durability and is made of 100% polypropylene. • Choose from either a 5-leg cast aluminum base with 23” leg spread or a rugged 5-leg tubular steel base with 20” diameter attached footring and 23” leg spread. • Waterfall front seat provides an ergonomic chair that is comfortable and supportive. • Backrest: 16” W x 10.75” H. Seat: 17.5” W x 15.5” D. • Casters are a single-wheel ball bearing caster for hard floors. • Warranty: 13 years. Standard colour is black.