What is the difference between a waterfall seat edge and a rounded seat edge on an ergonomic chair?

A waterfall seat edge curves steeply downward (20°–30°) at the front — more effective pressure relief for shorter users. A rounded seat edge has a gentler curve (10°–15°) — appropriate for taller users. Both are preferable to a flat, squared-off front seat edge for extended ergonomic seating. FindOfficeFurniture.com notes seat edge design on ergonomic chair specs — call 888-719-4960.