ALEX TOYS-Modeling Clay. Alex Modeling Clay is a great way for young artists to create colorful; 3D models. The soft clay is non-toxic and easy for little hands to shape. It will never dry out; harden; shrink; or change shape so it can be used over and over again. No matter how you choose to shape it; our colorful clay will provide endless hours of creative fun! This package contains 17.6 ounces/500 grams of clay (24 assorted colors). Conforms to ASTM D4236. Recommended for ages 3 and up. WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years. Imported.