No mess, no crumbling, air dries. 7x easier to use than clay. Dried pieces can be decorated with markers, paints and glitter glue. This package contains two 2.5oz/70g, four 0.5oz/14g bags, and technique guide. Non-Toxic. Conforms to ASTM D4236. Recommended for children ages 6 and up. WARNING CHOKING HAZARD-small parts. Made in USA.