Alera Wrigley Pro Series High-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 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