Results were terrific - quick even baking and cooling. But what was most impressive was the easy loaf removal. Silicone bakeware is made of FDA-approved food grade silicone and this should be clear on the packaging label. Each piece of silicone has its own limitation as to manufacturer recommended maximum oven temperature, which is usually stamped right on the product. Benefits of Silicone Bakeware: No greasing or oiling of pans required Pans heat quickly and bake evenly with no burnt or dark edges or bottom. Removal from pans is super easy - a slight twist or gently pulling on the sides and roll out your baking. They're freezer, refrigerator, microwave, dishwasher and oven safe. Bake, store, freeze and reheat right in the pans. No rusting or staining. No need to alter your batter or temperature - bake as usual. Cleanup is a breeze. Lightweight and perfect for a camper or RV. Storing is easy - although they do not easily nest, no special attention is required and they retain their shape. Notable Tips for Successful Baking Follow manufacturer's maximum heat ratings. Pans are hot to touch while in the oven but cool down quickly; use hot pads to remove them. Using a cookie sheet underneath will provide stability even for smaller pans. Always use a metal baker's sheet or specially designed sled or rack underneath wider or larger silicone pans. Wash pans thoroughly before first use. Warranties tend to vary with bakeware brands. Do not use knives or sharp objects - they could damage your silicone pans. Never use on an open flame or on stovetop burners. Silicone bakeware is the ultimate in non stick and so versatile, shaped muffin pans are amazing for shaped desserts such as mousse, pannecotta & jellies.