This cold-pressed, slightly-textured 140 lb. watercolor paper is crafted in Italy with a mixture of 25% cotton and cellulose. The cotton fibers are internally and externally sized for optimal absorbency and extreme strength. The paper is ideal for most watercolor styles, gouache, pen and ink. It reflects light well while retaining a transparency of watercolors and its medium grain makes it suitable for all styles of watercolor painting. It's acid-free, archival and free of optical brighteners offering a natural whiteness of archival quality that does not yellow over time. The postcards measure 4" x 6" and are available in pads of 15 cards. Make a super gift- for yourself or for someone else.