100% food grade silicone. SiliconeFeatures:1), Non-stick finish, durable, easy-cleaning and efficient.2), Any color, shapes and size avaliable.3), Safe to use in ovens, microwaves, dishwasher and freezer.4), Customer's design or logos highly welcome.5), Temperature range: -40 to 230 degree celsius.6), OEM order are very welcome. Silicone Bakeware