This 20cm X 25cm PleinAir Watercolour pad by Canson provides artists the benefits of a stiff, strong working surface with quality paper on top allowing artists to head outdoors to capture nature's beauty. The pads come with 10 boards that are mounted on white, acid-free, lignin-free, archival conservation backing. Once the artwork is created, it is ready for framing. Arches Watercolour is the ultimate choice for watercolour, gouache or ink washes. It is natural white, mould-made French paper.