High Quality & Security: The retainer cleaner case is made of high-quality plastic, which is durable. Environmentally friendly, Durable, Safe, and Odor-Free. Easy to Clean: Dishwasher safe denture container or simply clean in the sink with hot water. Allows you a safe and sanitary place to store your expensive invisible aligner trays. Multiple Uses: Great for dental guard container, retainer case, false teeth container, mouth guard container, nightguard cleaner, pacifiers, teethers, high-finish delicate jewelry, etc.