ProSculpt Baby is a polymer clay. Each 1 pound bar of ProSculpt clay contains enough clay to make two 18" dolls. It requires very little kneading and seams together without showing the joining lines. Cured at 275 degrees F (130 degrees C), this clay can be cured in a household oven. For every 1/4 inch of thickness, it should be cured for 10-15 minutes. When properly cured, it becomes extremely hard and durable. 1 lb pkg