Environmentally-Friendly: FDA Approved, BPA free, made of A grade stretchy silicone that are so durable and hard to tear or warp，heat-resistant to 450° , non-toxic, BPA free.seal well,no spills,no leak, durable ，dishwasher and freezer safe ▶Versatile: Stretchable lid of various sizes(2.6″, 3.7″, 4.5″, 5.7″, 6.5″ and 8.3″), cover different sizes containers, bowls, cups, glasses, etc. Instead of purchasing lots of plastic wraps, these lids are helpful in kitchen. ▶Keep Food Fresh: Safe & leak proof, air-tight seal so foods stay freshMake fruits, vegetables, unfinished drinks and other foods storage safety, keep foods fresh and prevent foods from spattering in microwave oven. Leak-prood, prevent water from spilling out. ▶Reusable & Easy Clean: Silicone lids is very easy to clean, reusable silicone can eliminating the need to repeatedly buy expensive plastic wrap,economical and health ▶Advanced: With original design, the lids can prevent bad smell from storing foods in the refrigerator. They are not easy to be out of shape and skid resistant. Come with a silicone scrubber, the lids clean up easily and eliminate the odor. [WARM TIPS: Please keep lid and container dry during use.