I was a bit disappointed. They’re just nice looking glasses. They don’t insulate any better than my other glass mugs, they lack a weight that makes them feel like a high quality glass and they don’t hold as much coffee as my other glass mugs do. They’re very aesthetically pleasant although I wish I could mix the colors in the sets to get one clear and one amber instead of getting two glasses of the same color. But overall they’re just a nice set of glasses.