Features: 100% high quality. Professional Heat Sealer will easily reseal plastic bags so food will stop being exposed to dust and bacteria. Store food in packaging & help save the Earth. Airtight seal – Create airtight seal and prevent your food from tasting bland and stale and lock in freshness and flavor. Also safely pack cosmetics when traveling. Place edge of poly or mylar bag in your sealer and slowly pull the bag through. Squeeze air out of bag before completing the seal to create vacuum effect. Magnetic bottom – It easily attaches to refrigerators or any stationary metal surface so you will keep it handy in your kitchen, outdoor, cabinet or anywhere you need it.