Rigid heavyweight, 185lb externally sized, crisp bright white paper with a lovely cold pressed textured surface. May be used directly with any water-based media especially acrylics. If you prime the paper you may also use it for oil painting. Totally reliable and acid-free for permanent works of art. The three sizes are extremely convenient for quick compositions in the studio and for plein air use. Provides a true paper feel while painting with acrylics as compared with other paper products that are produced to simulate canvas.