This set of 22 airtight food storage containers comes in different sizes, including rectangle containers: 4*1.5L, 4*1L, 4*0.5L, and 4*0.24L, as well as round containers: 6*0.08L.The upgraded design features thicker lock clips with rounded edges for easy opening and closing, and high-bottoms for durability and stability. Stackable and nestable design helps save space.Our food storage containers are made from upgraded food-grade plactic materials that are BPA-free and completely safe for your health. These containers are designed to be used in the freezer, refrigerator, microwave（remove the lid), and dishwasher, making them a versatile and durable choice for all your food storage needs.These food storage containers feature a food-grade silicone seal and 4 locking clips that ensures superior airtightness, keeping your food fresh, dry, and nutritious for longer periods of time. With these containers, you can say goodbye to unpleasant smell and flavors in your refrigerator.