NatureVAC provides Air-tight industrial-grade storage bags. They use a puncture and tear resistant plastic that is completely flexible for easy storage of any product. When combined with one of our sealers they provide a air-tight zip lock seal keeping out air moisture and contaminants. These bags will stay sealed even in harsh environments. NatureVAC Precut Vacuum Seal Bag 15"x 20" 50pack - All Black