I really like the simple elegance and clarity of these glasses, their sturdiness, the 20 ounce size, and the fact that they're still lightweight and easy to hold.  (I'm a serious water drinker.)  I also liked that they specifically noted that they are lead and heavy metal free, and I was impressed to see that they are even commercial dishwasher safe.  Although I didn't see it noted anywhere, the bottoms of the glasses show that they're made in Italy, so I'm not surprised by the quality.