Product Description Strathmore 300 Series Stretched Canvas is an ideal choice for artists of all skill levels. Excellent for use with acrylic, oil and water-mixable oil paints. They are made of 12 oz. canvas back-stapled on a solid pine frame, and are sturdy enough for heavy applications such as mixed media, collage and impasto. 300 Series canvas is 100% cotton, triple-primed, acid-free and has a medium grain texture. Available in traditional (3/4″) profile.