Say goodbye to spills. TrueSeal glass food storage containers use a special airtight lid technology for a seal that expertly and reliably prevents leaks and spills. BPA-free lids require a simple press to protect food’s flavors, lock air out, and keep freshness in. Glass is tempered-tough and extra-durable. Fridge, freezer, microwave, dishwasher (lids on top-rack only), and oven safe up to 425° so you can organize, transport, store, and reheat – all in 1 dish.