Fredrix - Artist Canvas - Blue Label - Ultra-Smooth Portrait - 24x36 - Fredrix Blue Label pre-stretched canvas is made of superior quality medium weight blended PolyFlax/ cotton duck with fine texture for use with oils or acrylic paints. Ideal for portraits and other fine detail work. It is triple primed with acid free acrylic gesso. The canvas is stapled onto the back of standard stretcher bars. Paint on all four edges and hang it with or without a frame.