Lekue Silicone Heart Pan, Red Lekue is the silicone bakeware choice of some of the world's top bakers - "Silicone is the now of baking." - Rose Levy Beranbaum, Author of The Cake Bible, the #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 When using, place Lekue molds on a flat cookie sheet in the oven, do not use sharp tools on Lekue 9" across, 1.5" deep