The Pissaro Artist Portfolio is constructed of reinforced nylon and incorporates a sturdy honeycomb frame providing for a rigid and durable case to protect its valued contents even if used as checked baggage when you fly. The interior of this artist portfolio has been designed with built-in compartments in the top for brushes, painting knives, pencils, pens and surfaces. The bottom has a unique adjustable system where you can position the divider in an array of configurations to satisfy your particular needs for your art supplies or for your art. 23 x 31.