I bought these Libby glasses in 1991.  I loved the heavy bottom and the expensive look.  The highball glasses are perfect for cocktails and whiskey.  Twenty seven years later, I was down to one tumbler out of the set and I that made me sad.  Out of curiosity, I checked Wayfair and THEY HAD THE GLASSES!!  Let's hope they last another 27 years.  Could not be happier.