Seal in meats, herbs, seafood, fruits, vegetables, grains, pasta, lentils, cheese, coffee, leftovers and more! NatureVac, with its honeycomb vacuum power technology, blocks out harmful light and optimizes product visibility. This new material is thicker and stronger for ultimate durability. NatureVac Locks out moisture and airReduces freezer burn..and Seals in freshness. NatureVac rolls are compatible with NatureVac brand sealers and most other brands.