Lekue Silicone 8-Cup Heart Muffin Pan Lekue is the silicone bakeware choice of some of the world's top bakers in Silicone is the now of baking. Rose Levy Beranbaum, Author of The Cake Bible, the no.1 selling baking book of all time FDA approved food grade silicone, oven safe up to 500F, microwave, freezer and dishwasher safe Bakes evenly, won't burn edges, foods stop cooking when removed from oven to avoid over-baking, baked goods slide out when cool Microwave, freezer and dishwasher safe 8 Cups per pan. Each cup-2-1/2-inch diameter-by-1-1/2-inch deep