"This coaster worked great for my Tuesday night volleyball league. We are on a rec league and our team always has a beer on the side of the court for our time outs. The problem we all have is the grass and sand is not good for plastic cups. Last week I brought my carpet coaster and I was the talk of the team. Everyone asked what I had and how they could get one. I was able to set my beer down on the coaster and had no worries about it tipping whether it was on the grass or sand. I won't be going to volleyball without anymore".