hen uses heat to create an airtight seal to lock in mo-isture and air to pro-tect the food and maintain freshness material： vacuum bag it can be ued for storaging Gender：man Content: 3PC bag Function: Allows You To Precisely Control Your Cooking Temperature To Achieve Results. You Can Put The Food In The R Bag Into The Water Until Any Temperature Of 195°F / 194.0°F. By Using A Vacuum Sealing System, Water Will Not Seep Into The Bag And Stain Your Food, So Your Food Is Still Good During The Water Bath. Our Bag Can Also Be Punctured Design Style : The Use Of Vacuum Bags Means That These Bags Are Completely Airtight, Provide Consistent Cooking Results And Pre-vent Floating In The Deep -vor Bath. The Vacuum Sealing System Automatically All Air From The Bag, And Then Uses Heat To Create An Airtight Seal To Lock In Moi-sture And Air To Pro-tect The Food And Maintain Freshness. Service: Exchangeable Within 7 Days After Receiving The Goods Material：Vacuum Film Applicable Scenes : You Can Use It When You Use The Microwave Oven Heating Any Things