Archival ready to paint surface. Belgian linen is ideal for acrylic oil alkyd and tempera. Mixed media cotton surface accepts watercolor acrylic oil tempera and other aqueous-based media. Lightweight durable easy to transport great for Pleinair. Pre-primed with acid-free titanium white acrylic gesso. Made with 100% Nature Core a blend of vegetable based and recycled components. 20" x 20".