Siliconezone products were developed based on what professional and commercial chefs used: high-temperature silicone bakeware. Siliconezone bakeware can be exposed to temperatures up to 428 degrees F and to temps down to -58 degrees F, from your oven to your freezer. Products are covered in a high-gloss finish, making this bakeware non-porous to food flavors and odors. Also have nonstick surfaces. For the best baking experience, even heat distribution and quick cooling, Siliconezone is there. Made in the USA.