These 1 pound clay sets each contain four different 4 ounce colors of non-hardening, non-toxic, gluten-free, sulfur-free modeling clay. Claytoon clay has been used in the animation industry for over 20 years. Classic stop motion television shows and movies you grew up with were made with Van Aken's plastalina clay. Each color is individually wrapped for freshness and jam packed with pigment to stay true to that always bright color under the spotlight, so have a moist towelette handy. This lush set contains neon green, green, dark green, and pastel green clay. Made in USA. Certified by ACMI.