Alera Wrigley Pro Series Mid-Back Multifunction Chair with Seat Glide, Black: * Multifunction mechanism allows back angle adjustment relative to seat, adjustable tilt (free floating or infinite locking positions) 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 * 5-star base with casters for easy mobility * Recommended applications: general office and task * Features and functions: 360 degree swivel * Asynchronous control * Back height adjustment * Pneumatic seat height adjustment * Seat glide mechanism * Tilt * Tilt lock * Tilt tension * Arms included