Snack Cubes are a perfect 7 ounce square that have enough versatility to pack puffs for your baby and a full serving of fruit for an adult. Pack these up with your favorite trail mixes, granola parfaits, cheese and crackers, veggie serving and more. tempered glass = super strong glass! prep, freeze, reheat, store and serve all in 1 container. freezer, dishwasher and microwave safe. snap lock lids to keep food fresher longer. no harmful chemicals. No BPA, PVC, Lead, Phthalates. endlessly reusable. water & air tight. can be used for all stages of life. glass is endlessly recyclable.