Cass Art Artists Natural Linen Canvas is made from high quality european spruce wood and 100% pure flax linen. Made from the highest-quality spruce wood and 100% pure flax linen, this exhibition grade, europrean made, medium grain, clear primed canvas has been produced for use with all forms of oil and acrylic colour, as well as many other mixed media applications. These canvas are primed, FSC approved and acid free. They are sold in packs online but available individually in stores. The canvas range in size and are 2cm / 0.79 inches deep. The canvas heavyweight at 320gsm / 11.3oz. Stocked in all our UK stores.