What type of chair mat should I use with an office chair?

For carpet: choose a polycarbonate mat with a cleated (studded) underside that grips carpet — size depends on your chair's rolling area, typically 45"×53" for a standard workstation. For hard floors: choose a polycarbonate mat with a flat, smooth underside (not cleated, which would slide on hard floors). Thickness matters: 1/8" polycarbonate mats work for light carpet; 1/4" for medium pile; 3/8"+ for thick carpet. Avoid PVC mats, which emit plasticizers that can discolor flooring over time. FindOfficeFurniture.com has office chairs and chair mats — call 888-719-4960.