These are effective, the different colours are nice so you can tell whose drink is whose but they are obviously cheaply produced and aren't the most aesthetically pleasing. I would maybe save them for camping or something.
I received these as a little bonus from Chick Advisor in the Canada Dry Blaskberry Campaign. These Coasters are amazing! I have never been a coaster girl but this changed the game. They are colour coded so you know which drink is yours. Fits a variety of glasses, wine glasses, cans and single serve glass bottles. Best part is that they attach to the bottom of your drink, which means it goes where your drink goes. The only down side was that when used on a can it tricked you into thinking that there was a couple mouthfuls of pop left, from the weight of the coaster.
These reviews are the subjective opinions of ChickAdvisor members and not of ChickAdvisor Inc.