I have no idea exactly how old these glasses are but they came into my possession from a family member who was clearing out her kitchen in late 2000. One glass has a surface scratch, the others appear to be in excellent condition. I have used these more times than I care to remember for everything from coke to parfaits, jellies and individual english trifles. They clean up well and keep things cold for a good while. The glass is very thick. I have never tried using them for anything hot. Each glass holds approx 12oz of fluids and stands approx 7.25" tall