Why SUPER KITCHEN? Safe, Durable & High Quality. We are professional to offer the food grade silicone products with highest quality. Super Kitchen muffin mould has stood the test of time with use by the chefs. BPA-free & Food Grade Silicone This silicone muffin mould is made from BPA free food grade silicone. No cracking, odourless, non-toxic harmless. It can be used at temperature ranging from -40F up to 450f (-40C to 230C), suitable for oven, microwave, dishwasher and freezer. COMPARE Large Size Design Super kitchen muffin tray size is 27.8 x 19 x 5cm. It is larger than other muffin trays on the market. Thicker Design Super kitchen muffin tray is thicker than the other muffin tray on the market. The weight of our muffin tray is around 206g and the other muffin trays are around 103g which is too thin.