Silicone bakeware can handle it all; freezer, refrigerator, oven, microwave and dishwasher. It bakes wonderfully and baked items release easily. It's great for ice cream, gelatin, ice molds, custards and crafts. Resist stains and odors. Oven safe to 500 degrees. Pan is 10 5/8" x 7"; hearts are 2 1/2 round and 1 1/4" deep.