These canvas panels are an economical and a portable alternative to stretched canvas. They are great for lighter paint applications, quick studies, practice and class projects. The unbleached 3 oz. cotton is primed with acid-free acrylic titanium gesso to a finished weight of 8 oz. and wrapped around an acid-free recycled paper board core. Suitable for use with all acrylic paints, oil paints and other wet or dry media.