Acid free, 380gsm canvas, 100% cotton duck, high density weave, triple coated universal primer, mitred corners, double row back stapled, sizes over 60cm (23.6in) include bracing, wooden stretcher keys, 18 x 38mm (0.7 x 1.5in) pine wood frame, kiln dried stretcher bar, great range of sizes, shrink wrapped. SUITABLE FOR USE WITH: Mont Marte Acrylic Paint, Mont Marte Oil Paint. NOT SUITABLE FOR USE WITH: Poster Paint, Gouache Paint, Watercolour Paint