You'll be " on a roll" with paint and clay craft activities as easily as using a rolling pin with this great set of 4 designs. The clever styles include a dot pattern of various sizes in a random array, a wave pattern, zigzag squiggles, and parallel multi-width stripes. All rollers are 7" long and 1 1/2" in diameter and made of very durable plastic and hard rubber. Soap and water are all you need for an easy clean-up. Both the young and the young-at-heart will be very creative while developing coordination skills and artistic interests. For 3 years and older. Choking Hazard - Small Parts, not intended for children under 3 years of age.