The OXO 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 leakproof seal, and an elegant design means it can move seamlessly between the oven and the table. Dimensions: 4.75″ x 3.25″ 2.25″. Capacity: 4 Oz.