A coaster that fits drinking vessels of many shapes and sizes, from beer bottles to wine glasses, coffee mugs to sodie cans. That both protects its underlying surface and is color-coded for identification by a drink's rightful owner. That doesn't get soggy. That won't stick to your glass for a couple seconds when you lift it, and then dive bomb your chili before you can take it off. Grip Coasters. Someone had their thinking fedora on when they invented these babies.