The trinity ergonomic multi functional chair is the epitome of functional and practical seating with an ergonomic backrest with 3d curvature incorporating lumbar and spine support the trinity features a full range of adjustments including back and seat height back rake and seat slide and adjustable arms allowing you to customise your chair the perfect way for you seat height adjustment control measurements width 1100mm depth 600mm height 670mm seat height 470 570mm seat depth