Arches Watercolour paper is made the traditional way using a cylinder mould. This method ensures that the fibres are evenly distributed which makes the paper extremely stable so it will not warp or streach when water is applied to it. Arches watercolour paper ia 100% cotton fibres allowing it to absorb a lot of water without warping. It is sized to the core with natural gelatine so it can be scratched without tearing or linting. This internal sizing also prevents paint penetrating into the paper allowing light to shine through the pigment and reflect off the paper while ensuring durability of the colours. This A3 rough gummed pad has 12 sheets in and is available in 300gsm. Can also be used with Acrylic paint.