My husband wanted glass mugs so he could make layered coffee drinks (new espresso machine toy!) I didn't want to buy anything too expensive so I got these. They're perfectly serviceable and a good price but their appearance leaves something to be desired. You can see the seams where the two halves of glass are 'glued' together and there is a lot of rippling throughout the glass so they aren't terribly clear. They're fine for husband's needs, but I won't use them for company.