Thickest vinyl chair mat is engineered for ultimate performance and unparalleled floor protection for all-day use on any carpet type. The perfect choice for big and tall users and heavier office chairs. Easy -glide rolling surface provides smooth chair movement. Studded design keeps the chair mat from moving while protecting carpets from wear and tear. Free and Clear® non-orthophthalate, non-cadmium formula promotes a healthy work environment. Greenguard gold certified. Bevelled edge. Clear.