Premium Collection Gallery Canvas - Our Premium Collection is a true professional quality stretched canvas. Features 10 oz. cotton duck stretched around thick, heavy duty, finger-jointed stretcher bars made of strong, kiln-dried, pine. The staple-free sides of the canvas allow for painting on all four edges, and the extra-deep spline provides generous canvas wrap-around for easy restretching. The heavy-duty stretcher bars are 2-1/4 inch wide with a 1-5/8 inch profile. The surface is triple-primed with acid-free titanium acrylic gesso and is suitable for oils and acrylics.