The Pissaro Portfolio Series is made from Ethylene Vinyl Acetate (EVA), a unique reinforced nylon material used in the construction of premium suitcases. The honeycomb structure of the frame provides a durability that protects contents, even when checked as airline luggage. The interior has been designed with built-in compartments in the top for smaller items such as brushes, pens and pencils, etc. The deep base features adjustable dividers allowing the artist to customize the space. Smaller sizes can be used for laptop computers as well. Includes removable shoulder strap. Interior features may vary slightly by the size of portfolio.