Winsor & Newton-Canvas Panel. A professional range of pre-stretched artist canvases manufactured to the highest quality standards. Heavier weight, 8oz natural cotton duck with a medium grain surface. Ideal for oil, acrylic, and alkyd. Triple-coated with acid free sizing and two coats of highly pigmented acrylic primer formulated by Winsor & Newton. This canvas board is prepared for immediate use by the artist. Originally a sketcher's product, these superior quality canvas boards feature canvas laminated onto high quality boards of excellent stability.