Professional. Heavy duty solid pine. Heavier finished weights. Includes new Pro-Stretcher device and name label except on smallest size. Every canvas is made to perform featuring Kiln-dried stretcher bars all rigorously tested to withstand moisture and warping. Hand-stretched for best tension and tailored corners. Balanced absorbency and tooth. Prevents sinking of oil colour and improves adhesion. Highly pigmented titanium dioxide Gesso primer. Higher coverage and colour performance. Acid-free and archival. Built to last. Back-stapled with folded uncut corners. Extra cloth availability.