Nonstudded, protective vinyl chair mat for use on wood, tile, laminate & other hard surfaces ; Easy-glide rolling surface provides effortless chair movement ; Straight edge ; Free & Clear(R) nonphthalate, noncadmium formula promotes a healthy work environment while offering exceptional clarity & durability ; GREENGUARD Gold certified for low chemical emissions to UL 2818 ; Manufacturer's 1-year limited warranty ; Made in the USA;