This non-toxic non-staining air drying natural clay is fun to use and it is reusable! Developed by a classroom teacher Magic Mud promotes endless learning encourages unlimited discovery increases sensory motor development and allows self-expression. Air-dried objects made with Magic Mud can be turned back into mud again by breaking into smaller pieces and adding water! Magic Mud can also be fired in a kiln. Includes white clay project guide and wooden tool. Mud weighs approximately 3 pounds.