Prestige University art portfolios are made of durable water-resistant nylon material with a smooth running nylon zipper plus an adjustable, removable black shoulder strap. Comfortable, reinforced foam handle, reinforced corners. 1" gusset. Perfect for the student or professional artist on the go! Optional Masonite board available to add stiffness. NOTE: ALL PORTFOLIO SIZES LISTED ARE INTERIOR DIMENSIONS. ACTUAL PORTFOLIO WILL BE A BIT LARGER.