The Inkpress Matte Canvas is a poly-blend, acid free coated canvas cloth with a finish that is waterproof and smudge resistant. Artists Waterpoof Canvas - 20 mil - 95 % Bright Light textured surface 100% Cotton Rag 100 % acid and lignin free cloth. Matte, bright white finish Ideal for Ultrachrome, dye and pigments inks. Ideal for quad tone blacks Waterpoof and stretchable Instant dry and light fast. Compatible with Epson, Canon, HP, and other major brand printers.