I received these a couple weeks ago and I've used them daily since. They are a perfect size not bulky or undersized. They are insulated and help to keep my coffee warm longer! I am a barista and having a cup like this is nice for lattes cappuccinos and any other coffee. They do keep any drink insulated. The only downfall I would see that they have is they are a little fragile. But I would definitely recommend them to friends and family. I would purchase more to make a set of at least four. Very satisfied with the product. They wash easily and dry as any other glass.