Sturdy and strong is a really odd way to describe a wine glass. However, within 30 minutes of opening the box and pouring myself a glass of wine, I dropped it on the floor and banged in on the faucet while washing it (it's been a long day...). It didn't chip or break!! 

In addition to passing my accidental break test, it is super lightweight and is extremely clear. These would make a beautiful gift or great replacement for other glassware. I already placed an order for some red wine glasses!