First came POP, next comes SNAP - a full line of glass and plastic Food Storage Containers with interchangeable leak-proof lids. The SNAP Glass Food Storage Containers are made of naturally BPA-free borosilicate glass, enabling them to withstand extreme temperature changes without the risk of cracking or shattering. The SNAP lids ensure a leak-proof seal, and an elegant design means the Containers can move seamlessly between the oven and the table.