Looking for another set of daily glassware, I wanted something uncommon and modern.  I purchased this 16 piece glass set and the 10 piece juice set. This design is not only unique and pretty, I think it also makes the glasses a bit stronger than other smooth wall designs. The ringed design forms ridges on the inside of the glass that lend to its strength (think Roman arches or shape of an egg shell).  I'm not a physics expert, so, I may be wrong, but after a glass accidentally slipped from my hand, it bounced two times on my granite counter and off onto the hardwood floor and it did not break, I was impressed and had to attribute the unlikely outcome to something more than a fluke. No other glass of mine has survived such an encounter with the granite, plus one with the floor so beautifully.