PaintOn has been double-sized, meaning it is treated at the core and on the surface, for excellent wet-strength. PaintOn is extra heavyweight (250g) professional quality mixed media paper produced in our 400 year old Dutch mill.  It will resist buckling and warping with liquid media. This is a truly exceptional mixed media paper! Available in 6 colors (white, black, gray, natural, denim and sage). Colors are deep-dyed (no white core). 20 sheets per pad. Three sizes per color