Extra Large Silicone Mats for Countertop, 28" by 20" Multipurpose Mat, Counter Table Protector, Desk Saver Pad, Placemat Nonstick Nonskid Heat-Resistant Pad, Dark Gray. Durable & Reusable : Countertop pad is made of 100 percent food grade silicone, heat resistant between -40F and 446F.Non-slip, non-stick, not easy to deform or tear up, durable reusable.