Fredrix Creative Series Canvas offers a polyflax and cotton blend with a medium texture that is stretched over kiln-dried stretcher bars to prevent warping. Each canvas is archival quality and primed with an acid-free acrylic titanium gesso. Primed weight varies from 7 oz - 12 oz. The stretcher bars are Gallery Style 1-1/2 in. x 11/16 in. with extra bracing on larger sizes for added support. Ready for use with oils or acrylics.