Perfect for plein air painting and convenient for travel, Arches Watercolor Pads are ideal for both professional artists and students. Each pad holds 12 sheets of natural white, 140 lb (300 gsm) , 100% cotton paper that is acid-free. The paper is ideal for watercolor, gouache, ink, acrylics, drawing, and printmaking, and strong enough to handle multiple washes of color, masking fluid, scrubbing, and artist's tape without damage to the surface. Gelatin sizing gives each fiber a consistent feel and absorbency. A long-time favorite of artists, Arches watercolor paper is produced on a cylinder mould machine and has been manufactured in the same French paper mill since 1492.