office chair mat 1 material:pvc,pp,pe 2clear,for floor/carpet protect 3dif.size,thickness,weight 4popular in home,office Office Chair MatClear floor protection,with studs for carpet protectingSize:900x1200mm,914x1219mm,1000x1300mm,1000x1200mm...Thickness:1.0mm,1.5mm,2.0mm,2.5mm,3.0mm...Backside with studs or without studsWidely used for home, office, school,etc.. Popular in America,Europe, Russia ...