The MoGuard protects a man's moustache & beard from beer foam and other liquids that cause drippy lip. THE MOGUARD is made of flexible silicone which gives it the ability to fit onto nearly every size glass or cup! They make an incredible conversation starter and act as the ultimate cup identifier at the bar. It is very sanitary, as silicone (a non-plastic) is inert to bacteria, mold, and fungi. It's dishwasher safe and even fits onto a keychain. Now, that's low maintenance. Made to keep that glorious stache looking good at all hours!