1 ~ 50 OZ - Set of 40 - Includes 20 containers and 20 lids of varied sizes, and 2 pieces of Labels & 1 washable marker pen, To match different storage needs, This set includes 6 rectangular containers (1*50 oz, 1*34 oz, 2*17 oz, 2*8 oz), 8 square containers (2*40 oz, 2*23 oz, 2*13 oz, 2*6 oz), and 6 round sauce boxes (3*2 oz, 3*1oz). Leak Proof & Airtight - Our food storage containers equipped with a premium silicone seal and 4 Reinforced locking clips.The use of food containers can keep your food fresh and tidy by preventing food spillage and leakage of food smell. Microwave, Freezer, Dishwasher Safe - Our food containers can be stored in freezer, heated in microwave, washed in dishwasher,save your precious time perfectly. remove the lid when heating, avoid that the steam generated during heating cannot be dissipated because the lid is too tight. Stackable Kitchen Organization - Storage containers with lids have a sequential stack design along with reusable labels and marker