Mont Marte Terracotta Color Air Hardening Modeling Clay 500g (1.1lb). Terracotta Color Air Dry Clay with Drying Time of Approximately 24 Hours. Suitable for Sculptors and Modelers of All Skill Levels. Easy to smooth and knead: this air dry modeling clay has a fine, even texture and is flexible after kneading Suitable for fine detail: the fine texture allows you to create highly detailed pieces 24 hour drying time: this air dry modeling clay dries in around 24 hours to earthenware hardness (depending on thickness) giving you plenty of time to form your desired shape Versatile: suitable for professional art, clay craft and student projects Terracotta color: beautiful terracotta coloring for an earthy effect