I have lots of these Pyrex products and have always been good before these. The lids are very loose and barley snap on the containers. I contacted customer service and with no questions sent me new lids for all 3 that I purchased. When the new ones came it was the same problem. Not sure if it's just this size the 3 cup rectangular dishes or others as well. Little disappointed as in the past I've had great luck with these products.