Winsor & Newton Galeria Acrylic Medium, Modelling Paste is a lighter-weight modeling paste for use on canvas (to minimize sagging). Finely textured with a soft sculptural consistency, it's suitable for building multiple layers. The matte finish may be over-painted and color may be added directly to modeling pastes (note that color will become lighter and more chalky and the resulting paste with have reduced body). Details:Available in multiple sizesMatte finishFinely textured with a soft sculptural consistency