<b>Seal the containers to ensure food freshness and isolate bad smell!</b><br>1. Please dry the containers and the silicone lids completely before you use them.<br>2. Place half of the lid over one edge of the container. Stretch the other half away from you.<br>3. Stretch, then press the top of the lid while pulling the tabs to create a vacuum seal.<br>4. Pull the sides to ensure a perfect fit. Containers are now stackable!<br><br><b>Handy &amp; Money-saving</b><br>1. Please hand wash the silicone wraps with clear water or boiled water<br>2. You needn’t buy disposable wraps to cover your leftover food once you own these stretchable silicone lids!<br><br><b>Perfect Sealing</b><br>1. For the best sealing, please dry the surface of silicone lids and containers completely before using.<br>2. Leak-proof design and good adsorption prevents air or liquid leakage.When the sealed container is upside down the food covers won’t easily fall out.<br><br><b>Resistant &amp; Durable</b><br>1. When used in a microwave or an oven, the silicone lids can only be used under high temperature for not too long.<br>2. The temperature tolerance of the silicone covers ranges from -40F to 446F safe in dishwasher, freezer and microwave.<br><br><b>Stretchy Size:</b><br>2.6" (will stretch to 3.5")<br>3.7" (will stretch to 5")<br>4.5" (will stretch to 6")<br>5.7"(will stretch to 8")<br>6.5"(will stretch to 9")<br>8.3"(will stretch to 10")<br><b>Specifications:</b><br>Material: High Quality Silicone<br>Quantity: 12 pcs<br>Color: White and Blue<br>Heat resistance: -30℃~230℃<br><br>Different sizes meet various demands.Keep your refrigerator and kitchen clean and tidy, enjoy cooking every day!<br>