Stays soft until baked – Does not air dry. Remains soft and flexible until it is baked in your home oven - No kiln needed. Store extra clay to use later. In the classroom –offers an inexpensive way to let children explore their creativity. Fun to Paint and Finish - After baking, it can be sanded, drilled, carved and painted with water-based acrylic paints. Easy to work - Use your hands or try a variety of clay tools and armatures to build your finished piece. Made in the USA - Non-Toxic Polymer Clay for Kids & Adults - This polymer clay is safe enough for artists of all ages since it conforms to ASTM D-4236 and EN 71 AP safety standards to be non-toxic.