Four-color clay assortment is ideal for classroom use. The clay warms up quickly to make shaping fast and fun. Smooth-textured clay will not stain clothes or skin. Four individually wrapped 1/4 lb. pieces. One each red, green, blue and yellow. Nontoxic. Clay/Pottery Type: Re-Usable; Color(s): Blue; Age Recommendation: Ages 6 And Up; Compliance, Standards: AP Certified Nontoxic.