You can hang it on the top rack or stack it on top of each other for space saving and easy access! ,Food-grade Material: The cupcake tin made of 100% food grade silicone material, BPA free, can withstand temperatures from -104°F to 446°F, no irritating odor, will not fade, health and safety, suitable for oven, microwave, freezer.,Non-stick & Easy to Release: Unlike pure steel muffin pans, our flexible silicone cupcake tray has a non-stick surface, gently press the bottom of the silicone muffin pans for baking to remove the muffins easily, it is very easy to release.