How does seat depth adjustment work on an ergonomic chair?

Seat depth adjustment (seat slider) moves the seat pan forward or backward — typically 2"–4" of travel — allowing users of different thigh lengths to maintain the correct 2"–4" gap between the front seat edge and back of knees while using full back support. FindOfficeFurniture.com notes whether seat depth adjustment is included on all ergonomic chair specs — call 888-719-4960.