24" x 20' roll of Professional Matte Canvas.HP Professional Matte Canvas is ideal for printing museum-quality display prints, sharp black-and-white photographs and collector editions. This heavyweight canvas has a smooth, bright-white, matte finish. This media is constructed with an acid-free poly/cotton base and pH-neutral coating to provide long-term media integrity. Print with HP Vivera pigment inks for exquisite water-resistant prints. You'll get long-lasting, fade-resistant images when used with HP pigment inks.