Alera Wrigley Series 24/7 High Performance High-Back Multifunction Task Chair, Up to 300 lbs., Black Seat/Back, Black Base. Ergonomic design combines with high performance functions for all-day comfort. Multi-function mechanism allows back angle adjustment relative to seat, adjustable and forward tilt. Waterfall seat edge reduces pressure at the back of knees. Padded slant T-arms are height- and width-adjustable. Impact-resistant molded plastic shell. Five-star base with casters for easy mobility. Recommended Applications: General Office & Task; Seat Color: Black; Back Color: Black; Color Family: Black.