Heavyweight, waterproof nylon fabric provides quality. Backpack straps can be tucked inside zippered pocket to transform your backpack into a portfolio, with removable shoulder strap. Main compartment lining is clear for easy viewing of clipboard, pads, canvasses, tec. T-square pocket with locking mechanism. Front mesh pocket perfect for brushes, paints, pen and books. Tube holder great for oversized artworks and drawings.