What does seat depth adjustment actually do on an ergonomic chair?

The seat depth slider moves the seat pan forward or backward — usually 2"–4" of travel — so you can use the full backrest without the front edge cutting into the backs of your knees. Without it, shorter users either lose lumbar contact or end up with pressure on the back of their thighs, both of which get uncomfortable fast. It's one of the features that separates a truly adjustable ergonomic chair from a one-size chair with an ergonomic label. FindOfficeFurniture.com lists seat depth adjustment details on every model — call 888-719-4960 to find the right fit.