Premium weight Montval cold press watercolor postcards are perfect for creating personal greetings. Ideal for light washes, inks, marker, and debossing. These postcards require standard letter postage. The Canson Artist Series range features premium art surfaces meticulously composed for professionals to create showcase-worthy pieces. Made from heavyweight paper (140lb/300gsm) known for its luxurious texturing for stunning washes, gradients & layers without unsightly warping. Create memorable holidays, events, parties & milestones by showcasing your artwork on these blank cards, 140lb/300gsm, 30 Sheet, 5x7 inch, 1 Count