I love these tumblers mainly because there is no stem and it is double insulated so that means that my wine will stay colder without ice and I can enjoy the tast of the wine and not the water from the ice. I really love the fact that it came with it's own straws and a brush to clean the straws...I think the most impressive is the 2 extra lid sealers. That had me sold at hello. These tumblers are 12oz each and hold a smoothiwe cold for hours and kept it at the frozen state for a hour....Ok, I know what your thinking, yes,,,I made a smoothie and started washing clothes and left the smoothie upstairs...I have a thing about watching the clothes agate in the washing machine. Forgot about it and over an hour went by when I came upstairs and the smoothie was still in the frozen state....I was able to enjoy my smoothie after all. Now watery smoothie for me!
Overall. these tumblers are a great asset in any home and for all serious drinkers. They are versy sexy looking in your hands and a must have. I would recoimmend them to family and friends