Art Advantage Artist Canvas Visual Edge 20"x 20"- 100% natural cotton canvas pre-stretched over .75"x 1.5" paulownia stretcher bars. Triple primed with acid free acrylic primer. Visual edge canvas is stapled on the back so that the artist can include the canvas sides in the artwork, thus alleviating the need for an expensive frame. Medium texture and uniform weave readily accepts oil, acrylic, and alkyd paints.