Our Anchor Fondant and Cookie Cutter is made using production grade ABS plastic that is FDA approved and BPA free. The sizes listed pertain to the approximate height of the cookie cutter. The 4 inch size is displayed. This fondant/cookie cutter has a minimum depth of 1/2 an inch. All other sizes are directly proportionate to this size. All Owl Fondant and Cookie Cutter Sets will be RED. These items are dishwasher safe.