Whether you like to create in a studio or plein-air, these rigid boards are ideal because they don't require an easel or additional support. The high quality cold press premium surface is great for colored pencil, graphite and oil pastel. The boards are available in a range of sizes to fit a variety of needs. Extra boards stay clean and safe in resealable bags, ready for your next inspiration. PH neutral, uses Crescent 300 series professional grade.