Now, you can enjoy the versatility of glass with the organization benefit of easy find lids. These containers feature leak-proof lids with an easy to use OnePress Seal that keeps food fresh longer. Finding the right lid is a breeze with the snap-to-base system, with lids that snap to each other and to the bottom of containers, making finding the needed lid fast and simple. Both lids and glass bases are designed to nest neatly for seamless and space-efficient storage. These containers are perfect for microwave reheating and the tempered glass bases are oven-safe up to 425 degree Fahrenheit.