Wave goodbye to dreary, mismatched tupperware and say hello to our glass storage set Crafted from borosilicate glass, these containers are tough enough for the microwave, gentle for the fridge, and cozy in the freezer. And yes, you can absolutely go from freezer to oven without any breakage With airtight Bisphenol A-Free plastic lids, your leftovers will stay as fresh as the moment they were made.