Food and drinks will taste as good new : Airtight Seal keeps them Fresh Longer and Prevents Spills. 6 Different sizes of silicone cover : The set includes 6 transparent silicone sleeves of different sizes. Because they are stretchable materials, food lids are easy to fit into most bowls, jars, containers, cups, mugs, cans, jars, and you can even use them to cover your half-cut melon or watermelon. Absolutely safe materials : Your safety is our top priority, for this reason we’ve made sure the silicone stretching lids are BPA-free, food grade and completely nontoxic. You can therefore use the stretch lids all the time without worrying about yours and your family’s health! Cold and heat resistant : Feel free to put the stretchable food lid in the freezer or even in the microwave and dishwasher. Since the silicone material is resistant to low and high temperatures , the bowl stretch lid will remain intact and as good as new for a very long time. Eco-friendly and economical : The silicone stretch cover lids will reduce your plastic waste and help you save money, since you will no longer need to buy cellophane to cover your leftover food fresh. Plus, the bowl lid does a much better job at keeping your food fresh. Read Less