So handy that anyone can use it! \n\nThe JarKey is made of high density ABS plastic in an elegant design. JarKey has no sharp edges or points, no moveable parts, and is extremely durable. Dishwasher proof. \n\nThe unique thing about the JarKey is the special three-point principle that ensures the vacuum to be released by a gentle lift without damaging the lid. After releasing the vacuum, the lid can easily be unscrewed.