This is a round canvas board from Clairefontaine which is a low cost, low weight and durable surface perfect for oil and acrylic paintings. Canvas boards are made by pasting canvas or paper textured in a cloth pattern directly onto plywood board or cardboard, making it perfect for students and beginners looking for a cheaper alternative to stretched canvas. These canvas board have a universal white coating which prepares it for oil and acrylic paintings, helping to protect the cotton fibers from degrading over time which is common with oil paints. The canvas board is 3 mm thick and made from 100% cotton which is completely acid free, helping to prevent yellowing and discoloration that can occur over long periods of time. - Brand: Clairefontaine - Size: 20cm - Depth: 3 mm - Made from 100% cotton - Shape: Round - Ideal for oil and acrylic paints - Universal white coating