Glass storage set contains (4) 1-cup containers and (2) 4-cup containers with navy lids. Unlike most plastics and metals, glass is all-recyclable, won’t stain, and won’t retain odors. Enjoy a cleaner experience.These bento-box style meal prep containers are the perfect way to plan your week. Glass stacks, reheats, and washes clean in the dishwasher. SnugFit lids are top-rack dishwasher safe and seal to protect flavors in the fridge and freezer.Fridge, freezer, oven, microwave – 4 needs, 1 dish. Save time moving foods, cleaning, and organizing. Glass containers are tempered tough to handle high temperatures (up to 425).