Use vacuum sealing to keep your food fresh with these vonshef bags more and more people are recognising the benefits of vacuum sealing when preserving fresh food for as long as possible vacuum sealing works by extracting air and excess moisture from around your food slowing the rate at which it spoils and enabling you to keep food fresher for longer these bags are designed for use with the vonshef vacuum food sealer but will also work with any other compatible vacuum sealers theyrsquoll