Our food storage set keeps food fresh and healthy. This set has 6 35-ounce food storage containers, 3 partitioned and 3 non-partitioned, which better meet the needs of different situations in life. The container is made of glass, non-toxic and BPA-free, very safe. Can be stored in the refrigerator or heated in the microwave, but the lid must be removed first. Our food storage containers are airtight securely with a silicone seal, once the ring on the lid is pressed, the silicone seal inside the lid expands to seal the jar, and an anti-sucking vent is designed on the lid for easy access . These glass prep containers with lids encourage you to cook and eat healthier meals at home. The beautiful design of our glass lunch boxes makes them perfect for gyms, picnics, office lunches, and a little helper around the house.