The GrainPro® SuperGrainbag® Plus (SGB Plus) provides a complete package with an outer bag and an inner hermetic liner (69RZ or 69RT). The liner is made from the same multi-layered plastic as GrainPro’s SuperGrainbag® and has excellent water and gas barrier properties. Cable ties (included) or heat welding can be used to seal the inner liner. The outer bag is made of woven Polypropylene and is sewn shut. To further enhance preservation, oxygen can be removed from the bag to speed up oxygen depletion using GrainPro Oxygen Absorbers which are sold separately.