SiliconeZone Set of 6 Assorted Large Muffin Cups: Solid colors Commercial design; Can go from -58 degrees F to 572 degrees F Made with FDA approved pure food grade silicone, it has no bulk fillers; Oven, microwave, freezer and dishwasher safe Reusable muffin cups; Even heat distribution; Quick and even cooling High gloss, non-stick finish will not retain odors or flavors; Rinses and wipes clean easily Flexible for easy removal of baked goods; Can be folded for easy storage