Anchor Hocking designed the TrueSeal Glass Food Storage products to prevent spills and leaks by utilizing the BPA-free, textured lid, which seamlessly forms to the glass container. The airtight seal ensures that transporting and keeping food fresh has never been safer or easier. The lids are tougher than ever, easy to date with dry-erase markers, and top-rack dishwasher safe. Once you're finished, nest them together and discover the room you forgot you had in your cabinets. TrueSeal Glass makes carrying food to work, keeping it in the fridge, microwave-reheating it in a pinch, and saving space at home easier than ever.