Jasart Canvas Boards are made from 100% cotton canvas board and are triple primed with quality acrylic gesso. The 380gsm (7oz) medium texture canvas is stretched over 3.5mm hardboard core. They are a low-cost alternative to painting on stretched canvas and ideal for beginners, students, or professional artists wanting to create quick studies. Jasart Canvas Boards are thin, lightweight, and easy to transport, which also makes them the perfect choice for painting outdoors. Canvas boards are also inflexible, giving you more control over hard lines in your artworks and studies. These canvas boards are acid-free, and suitable for oils, acrylics and alkyds mediums. This makes them a great choice for your next artwork or quick study. The Jasart Canvas Boards come in a wide range of sizes, so you can choose the size that will best suit your needs!