12.5x9.5 White Rigid Stay Flats Self-Seal Cardboard Envelope Mailers 12.5"x9.5" Quantity:400 high-tensile strength film clings to

high-tensile strength film clings to itself

-Cardboard Pads -Thickness 1/8" -9"x12" -32 ECT -Adds stiffness to flimsy packages

8x8x7 boxes

100% compostable*- will decompose in commercial landfills

The strong seams allow for maximum protection

12.5x9.5 White Rigid Stay Flats Self-Seal Cardboard Envelope Mailers 12.5"x9.5" Quantity:400 high-tensile strength film clings toFortify your packages with the most robust cardboard mailers on the market. Crafted from premium 250 GSM material, these white mailers are built to shield your shipments from the elements. Ultra durable 250 GSM cardboard construction Self sealing closure for seamless packing Heavy duty adhesive to prevent leaks and spills Don't entrust your valuable items to flimsy packaging. Our top tier cardboard mailers provide unparalleled protection to ensure