Winsor & Newton acrylic paper block acrylic paper with a non-absorbent canvas structure, specially developed for the application of all acrylic paints and mediums. The paper is ready to use, no further primer or preparation is required. The surface remains smooth and slightly shiny after painting. Winsor & Newton Acrylic Painting Paper is acid free and contains no optical brighteners. It has an archivable quality and high ageing resistance and does not yellow.