Warring commercial heavy duty 1-gallon pistol vacuum sealer bag. For use with warring commercial wvs50 vacuum sealer. Bags are extra thick for long storage. Bags can be frozen, boiled, microwaved, and used with and immersion circulator for sous vide cooking. Bags can be opened to add or remove product and then resealed and have an vacuum placed on them again. These use a one way valve to evacuate the air.