1. 10-piece glass container set: 10 containers, 10 lids, a variety of sizes and shapes to meet your storage needs. Set Includes: 2 (11 oz), 2 (13 oz), 2 (18 oz) 2 (28 oz) 2 (36 oz) lids. These glass bowls with lids come in a variety of sizes and can be used for food storage and transport, meal prep, leftover storage, restaurant and deli takeout, portion control, picnics, and camping 2. Borosilicate Glass: Our glass storage containers are made of borosilicate glass, which is sturdier than other glass food storage containers and can go directly from the freezer to the microwave or oven to the table 3. Airtight Smart Lock Lids: The glass food storage containers use snap lock lids with silicone seals to keep your meal prep foods preserved longer than regular plastic food storage containers. These lids are easy to use and won't leak. These lids won't crack or slowly stop working 4. Easy to use and care for as it is microwave, freezer, dishwasher, and oven safe. Please remove the lid before putting in the oven and microwave