These are the most purified containers Lock & Lock has ever made.  Innovative four-sided locking system for an airtight seal and watertight storage so food stays fresh longer and there’s no messy leaks.

• The four sides of the locking system promote an airtight seal due to equal pressure to all four sides, along with the hollow-center silicon sealing ring that makes it possible to lock tightly
• Silicone sealing ring can be removed for cleaning if necessary
• Test results show Lock & Lock airtight containers allow in 3,000 – 6,000 times less moisture than other containers, making them far more airtight
• Lids feature four side flaps or “wings” that are hinged and slightly flared at the end for an easy grip when opening
• Patented blocking hole system help ensure lid matches up to the base of the containers, making it easy to lock into place
• Made of high-quality BPA-free plastic
• Built for durable, unbreakable, long-lasting use and hygienic, food-safe storage
• Passed the KEMTI bending test
  - Lids can bend 3,000,000 times 80° to right and left before they break
  - If these containers were to be used 10 times a day, they would last for 821 years and still maintain their form and rigidity
• Microwave (reheating only), freezer, and top rack dishwasher safe
• Can withstand temperatures ranging from -4°F to 210° F
• Semi-transparent body makes it easy to use and clean
• Containers can be nested together, and with the lid in place, they can be stacked one on top of the other
• 13 Container Set comes with matching lids and bonus (4) Dividers that fit into 6.6 cup containers