Double Zippered Artist Portfolio 24"x36": The Double Zipper Artist Portfolio features a removable and adjustable shoulder strap with a no-slip shoulder pad, an ergonomic, comfort grip handle, and reinforced, bound seams for added durability. Imitation leather corner reinforcements provide stylish strength and two large zippered compartments create separate storage options for the artist. They are made of water-resistant nylon and sized two inches larger than stated dimensions in each direction.