Like others have reported these are subject to fractures/cracks. (see image attached) I've had them approx 10-14 months. Everything is hand washed and rarely used in microwave.
Extremely disappointed because I've invested quite a bit so I could eliminate other storage containers. Bought 2 sets from big box store and several more from local supermarkets. Resisted glass because of weight...too many would be too much for fridge shelves.
Time to start over!