Star Products Poly Art Portfolios 20-Inch by 26-Inch, Black is made from acid free durable polyethylene and is water, stain and scuff resistant. The steel riveted soft woven webbed handle makes it easy to carry while the elastic snap buckle closure keeps your work safe and secure. It features a folded gusset that expands up to 2 inches for extra storage. Star Products Poly Art Portfolios is the perfect solution in protecting your valuable work from the elements for years to come.