This is legitimately one of the best purchases I've ever made. I feel like the ad for it when I show it to people because no one believes it's universal until I show them. My drinks stay icy and delicious for hours, literally hours, I'm a slow coffee drinker so having my iced coffee free from being completely watered down in the 2 to 3 hours it takes me to drink is amazing. Not to mention the fact that I'm not cleaning up a big puddle of water from the condensation and on top of that when I'm done with my drink, if I'm out and about, the thing fits into my purse! It's just great. I have been recommending it to everyone. Best purchase I've made in a long time.