Product review (1 stars): Damaged Upon Arrival
Two of the five cups had deep dings in the bottom of the cup. I thought these cups would be sturdier based on the reviews, but they don't look like they'd last for the long haul.  More like you'd use for less than a year, and throw away.  Not worth purchasing.

Updated 8/8/2014
I think it is highly suspicious that within 2 weeks of posting my 1-star review on Amazon, I received 5 thumbs down. This product has a total of 18 reviews and I doubt that the traffic to this product is so heavy that it warrants this kind of response in so short of time (and interestingly all negative).  Makes a person wonder just how a company may react to negative consumer ratings.