The Lekue classic 8-inch x 9-inch rectangular cake mold is flexible, non stick, and cleans up easily. The special design and reinforced structure make transportation easy and the molds more stable. Constructed of 100% platinum silicone.The square shape of the pan is perfect for making a variety of desserts, including cakes, brownies, and even casseroles. Its durable construction allows it to be used in the oven, microwave, and freezer, making it a versatile addition to any kitchen.