Plastic Bag Heat Sealer Sealing Machine For Snack Food Saver and Creates Airtight Containers by Unyield 1. Food Saver and Creates Airtight Containers - Home Essentials Expert - Unyield Bag Heat Sealer helps you resealing any original plastic bags in order to keep food stop being exposed to dust and bacteria. 2. Create airtight seal and prevent your food from tasting bland and stale. Lock in freshness and flavor. Perfect for safely sealing plastic party bags, treat bags, candy bags, popsicle bags and plastic rolls. 3. Magnetic bottom design convenience for you to keep it on the refrigerators or any stationary metal surface. 4. Easy to use - Place the edge of target bag in your sealer and slowly pull the bag through. Squeeze air out of bag before completing the seal to effectly create vacuum. 5. It operates simply with 2 AA alkaline batteries (batteries are not included in the package).