Sherwood's 12 piece lovely airtight containers keep food fresher longer. No more mess in your lunch box, refrigerator, or freezer as they are all leak proof. These plastic containers are very convenient to go from your refrigerator to the tabletop with clean and attractive designs. The locking system provides equal pressure on all sides of the hollow silicone seal ensuring air and water tightness. The leak proof silicone seals ensure that you can drop them in your bag with no spills. The seals are removable to prevent bacteria build-up. The rectangular and square shape is great for storing snacks like carrot sticks and pretzels. They are freezer, microwave & dishwasher safe. Earth and family friendly, these storage containers are all BPA free and Reusable.