General Usage Mont Marte Double Thick canvases feature a 38mm deep frame that offers a contemporary clean edge look with no further framing required. Triple coated with universal primer and ready to be painted on. This series is suitable for moderate application of paint and light collage techniques. Used by professionals and students. Features Acid free, 380 canvas, 100% cotton duck, high density weave, triple coated universal primer, mitred corners, double row back stapled. Sizes over 60cm include bracing, wooden stretcher keys, 38 x 38mm paulownia wood frame, kiln dried stretcher bars, great range of sizes, shrink wrapped, corner protectors.