All Sargent Canvas panels feature Agro based particle board and double acrylic titanium priming and are acid free. They are well suited for use with oils or acrylics. Panels measure 0.125" thick and have 5 oz. canvas weight. Made of 100% cotton. Details:16" x 20"0.125" thickPack of 3Double primed100% cottonAcid freeSuitable for oils or acrylics