CHOOSE QUALITY: Made of premium silicone and glass fiber; Stain-proof,stick-resistant,This mat is made of reinforced fiberglass and food grade silicone.baking mat will never tarnish or discolor; Meticulously designed to serve you for years and years or even more; a must-have accessory for any kitchen. DOUBLE THICKNESS: The thickness of the Mat is 0.6MM, which is almost twice that of other mats (0.3MM). 25"*18". ANTI-SLIP BOTTOM: The Baking Sheet Liner is the bottom of mesh design. It is strongly adhesive to countertop or other surfaces, no worry to slide away. When you place the mat on a countertop or any other SAY GOODBY to DIRTY: Will keep your worktop clean. Large kneading mat no more scrapping dough or fondant off the worktop,Repeated use and cleaning cycles do not affect the non-stick properties of the pad.