3 years & up. Build, shape and sculpt! These eye-catching earthy tones assist in visual stimulation and allow for elements of realism in art projects and works. These pieces of modeling clay are perfect for designing colorful pieces of art and are designed to not dry out! Crayola® clay is not made to be places in an oven, kiln, or microwave, and is made with non-toxic materials. Includes 8 pieces of natural colored modeling clay; 2 Natural Grey, 2 Natural Brown, 2 Natural White, 2 Natural Black.