36" X 48"Rectangular Polycarbonate Office Chair Mat for Carpet

Rectangular PC chair mat, it protects plush carpets from damage caused by moving rolling chair casters; 

Transparency and solid, it made from polycarbonate Materials, 

an incredibly tough and firm material which will not crack, curl, discolor or smell 

Highly Transparent, Smooth Edge. 

http://www.allife-mats.com/