Sasa Demarle SF 00112 Silform Non-stick Perforated Baking Mat for 4-Inch Buns, 15 Molds Bakes perfectly-shaped round hamburger buns Made of fiberglass and food grade silicone; FDA, NSF, and Kosher certified Each mold has 4-inch diameter and 3/4-inch depth Perforations enable uniform heat diffusion for perfectly baked products Easy to clean--use a soft sponge under hot water