Premium Food Grade Material - These silicone lids are crafted from eco-friendly food-grade silicone, completely BPA-Free, non-toxic, and odorless. Safe for direct contact with food and reusable. This is an excellent alternative for your missing container lids and can turn any regular bowl into a portable container. Flexible & Stretchable Food Covers - These silicone stretch lids are highly flexible and stretchy enough to accommodate various shapes of food containers. Tip: Please ensure the edges of the containers and silicone lids are cleaned and dried before use (NO oil and water). Environmentally Friendly & Reusable - With these silicone food covers, you won't need to keep buying expensive plastic wrap. They are washable and easy to clean. (Tips: dishwasher safe, but avoid abrasive or strong foam cleaners.) Multi-useful & Super Practical - This silicone lid is perfect for storing leftovers, transporting dishes to potlucks, stacking bowls, unfinished drinks, and leftover fruits and vegetables. They easily create a perfect seal on glass, plastic, or metal containers to keep food fresh. Easy to Use & Durable - The stretchable container lids are rated for -40 C (-40 F) to 232 C (450 F). Safe for fridge and microwave use, not easily deformed, ensuring long-lasting durability. Each stretch lid features 5 grips around the edge for enhanced usability. You will be glad you chose these flexible food lids!