Perfect for air tight reseal of chips, snacks, foods. Works with any plastic bag packaging. 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. Designed with ease of use in mind - Place edge of poly or my Lar bag in your sealer and slowly pull the bag through. Professional Heat Sealer will easily reseal original plastic bags so food will stop being exposed to dust and bacteria. Store food in original packaging & help save the Earth. 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. Before use, press it for 5 second (pre-heating). Slide it slowly will be better.