Strathmore 400 and 500 marker paper pads have 100% cotton, smooth, semi-transparent paper designed to accept heavy coverage of felt tip markers without bleeding. Developed for designers and graphic artists to create layouts, rough comps, and renderings. Excellent with permanent and watercolor markers, also suitable for pencil, charcoal, pastels, pen and ink. Color flows smoothly; surface retains the true color of the marker; fine lines hold a sharp edge. Strathmore marker paper is made in the USA.