These are the only glasses we use. I wash them in the top rack of my dishwasher with no problems. The only issue they have is: Do not get any spray sunscreen on them. It will make them permanently cloudy. The company stands behind their product. We had a couple that leaked and they replaced them, no questions asked. That was several years ago and we haven't had any problems with them I like it that you can buy lids for the glasses.