Cleartex Ultimat Rectangular Chair Mat, Clear Polycarbonate, For Plush Pile Carpets (over 1/2"), Size 48" x 60" (FR1115227ER) Rectangular chair mat - Protects plush carpets from damage caused by moving chair casters. Made from polycarbonate - an incredibly tough and firm material which will not crack, curl, discolor or smell. Lies flat and stays flat. Chair wheels will not sink into this mat under normal use The transparency of this mat allows your flooring to show through - it won't look intrusive in your home or office. Lies perfectly flat straight away and has an easy glide surface to help reduce leg fatigue. Environmentally safe. 100% recyclable. Free from PVC. Child and pet safe. Greenguard certified. Gripper back for stability on plush-pile, thicker carpets. Rectangular. Size: 48" x 60"; mat size may vary slightly due to manufacturing process