environmental protection, antiskid, antifriction, sound deadening , comfortable feel in feet. ~Coil:Length: 1.2mx 10-20m length Width: 1mx 10-20m length Thickness:2mm , 2.5mm , 3mm, 4mm It uses the same material in connected body Abounding color take unlimited originality imaginary space into your mind Features:environmental protection, antiskid, antifriction, sound deadening , comfortable feel ...