Silicone Pastry Mat is fiberglass coated with liquid platinum silicone, it is marked with easy to read measurements, is best for roll out dough, pastry and fondant. Any sizes of silicone fondant mat can be made, standard sizes like 19.5'' x 15.5'', 17.5'' x 25.375'', 15.75'' x 23.6'', 24'' x 36'' is popular.