Speedball Art Products Universal Art Portfolio cases have been crafted and designed for artists that need a durable and long lasting portfolio folder for artwork. This art portfolio case is used for storing, transporting and organizing finished artwork and art in progress. Each case includes interior cloth pockets, a handy elastic x strap with clip closure, clear interior zippered tool bag and a durable reinforced gusset. The art portfolios also include a handy exterior zipper pocket for storing all sorts of supplies. The entire art portfolio is constructed using a rigid flex board, providing a strong base for students, artists and designers to store, organize and transport artwork, posters, boards and small canvases. Portfolios are made of long lasting durable black textured nylon fabric and they also feature attractive faux leather reinforcements for added durability. Speedball's portfolio folder for artwork offers a complete combination of features at an affordable price. Available in 4 sizes - 14 x 18, 17 x 22, 20 x 26 and 23 x 31.