3 years & up. Defy gravity with these silicone coated foam building blocks! They stick to each other but not to hands or clothes. The cling power never fades; just simply wipe off to renew the stick. Perfect for fostering fine motor skills and critical thinking. Includes: 6 squares, 5 rectangles, 6 small triangles, 5 large triangles, 2 cylinders and 4 bridge blocks.