SiliconeZone Heart Muffin Pan, Red 6-cup heart-shaped muffin pan made of FDA-approved food-grade silicone Oven-safe to 428 degrees F; cooks and browns evenly; quick and even cooling Microwave-, freezer-, and dishwasher-safe High-gloss nonstick finish releases foods easily, won't retain food odors Flexible, space-saving construction; lifetime guarantee