I loved these coasters when they arrived and got so many compliments for them. Unfortunately, that was less than six months ago and I only have one left. The others all ended up in the trash because they warped like crazy (literally went from flat to convex). If you want coasters just for hot drinks or wine glasses then just maybe these would work. However, if you have ice in your drinks and use high-ball/tumbler glasses they most certainly won't!