These work as advertised. They are simple, plastic glasses that would be quite hard to break. They seem easy to clean, and so far I don't have any complaints.
Until you pick these up, you would have no idea they weren't cut glass. The only giveaway is the lighter weight of the tritan plastic. These are a great compromise between having something shatterproof and something that looks classy and traditional. You get every bit of the look of a cut crystal tumbler without concern of dropping it by the pool or at an outdoor party. Very nice item.