Classic Cotton Canvas RollsThis black canvas is made with natural, unbleached medium-weight 100% cotton duck primed with acid-free black acrylic gesso, providing a dark rich background for traditional paints and techniques as well as paint markers, spray paint and multi-media techniques. Great for creating custom stretched canvas sizes and is ideal for Urban Art pieces. The canvas weight is 5 oz. before priming and 8 oz. after priming.