LOVE the look of this mug and how it keeps the coffee hot longer.  Made the mistake of putting one of them in the dishwasher and the inside is now clouded, which is disappointing.  I left the mug in the direct sunlight hoping to dry it out but so far it hasn't completely cleared.  I would recommend only hand washing these.  They are more fragile than anticipated.  

Pros: Looks amazing.  Keeps coffee hot longer.
Cons: Need to hand wash as dishwasher ruined one of them and now it's cloudy in between the 2 glasses.  Glass seems more fragile than anticipated.