Discover the convenience and easy release of flexible silicone bakeware! Freezer, refrigerator, microwave and dishwasher safe— oven safe to 500°F. One mix makes 40-48 petite hearts; 20-24 mini hearts. 12 petite hearts, each 1.5 x 1.5 x 1 in. deep; 6 mini hearts, each 2.6 x 2.5 x 1.5 in. deep.