With the OXO Good Grips 16-Piece Everyday Glass Smart Seal Container Set, you’ll be prepared with storage for any amount of meal prep or leftovers. Made from naturally BPA-free borosilicate glass, these Containers are strong enough to go from freezer to preheated oven without cracking or shattering. Their durable lids form a leakproof seal with a silicone gasket engaged by four locking tabs. Thoughtfully designed, these food storage containers seamlessly transition from the kitchen for prepping or reheating, to the table for serving. Smart Seal Containers stack and nest for convenient storage. Dishwasher safe.