Mug Hug is a flexible silicone lid that can be placed atop your existing ceramic mug to help prevent “uh-ohs” in the office or at home. It also keeps your coffee warm while you type away. The Mug Hug will fit on most medium-sized mugs and even fits atop paper cups from Starbucks and McDonald’s! As a frequent “spiller”, I have to admit that this is quite clever!