11x17 art portfolio bag is made of PP material, frosted translucent, waterproof and dustproof, easy to clean, Oxford cloth edging, wear-resistant and durable. 11 x 17 art folder portfolio kids built-in straps and multifunctional pockets make it easy to secure bulky items and place smaller ones. 11x17 drawing portfolio is convenient to carry documents, paintings, design drafts, etc. Large art portfolio is a good helper in the office.