4 Jumbo 11" x 50' Commercial Vacuum Sealer Saver Bags Sous Vide Food Storage by VacSealBags FOUR 11" X 50' Rolls that eliminate freezer burn and extend the lifespan of frozen, refridgerated or cupboarded items. Heavy-duty 3.5 mil poly-nylon blend that is dishwasher safe and can be resealed/reused Universal bag that can be cut to whatever length you need and works with all 'clamp style' vacuum packaging machines One side clear, one side embossed. No marking on the bags, making them perfect for resale of goods.(Sharpie markers are perfect for writing on these bags!) Boilable, freezable, microwave safe, dishwasher safe, BPA free