POLYFORM-This package of modeling clay includes 5 Natural colors- black, brown, slate blue, dark green, and ivory. Net weight: 500 grams. EZ Shape Modeling Clay is the perfect medium to build creativity. It is a pigmented wax-base sculpting medium that has a smooth texture and a full range of bright colors. It stays pliable, will never harden, and it adheres to itself for easy modeling. Lead free, non-toxic. Reusable. For ages 4 and up. Conforms to ASTM D4236. Caution: Will not harden in oven-Do Not Bake! Melting point is 143 degrees fahrenheit. Caution: Clay contains ingredients that may stain or damage finished surfaces. Made in Mexico.