2 years & up. 16 over-sized interlocking shapes in four bright colors are easy for toddlers to grasp and link. Great for sorting, patterning, sequencing, and lessons in colors and shapes. These lightweight chunky shapes are easy to clean and can be used indoors and outdoors. Contains 4 each of square, rectangle, triangle and circle shapes in 4 colors. Largest piece measures 9.5"L x 7"W.