18 months & up. Mix and match these happy, colorful dinosaurs by color and shape patterns. The set improves fine motor, shape recognition, matching, problem solving, coordination skills and eye-hand coordination. Dinos are each approximately 4.5"L x 2.5"W, easily wiped clean and stored neatly in their own sturdy bucket. These dinos can be mixed and matched into endless combinations. Includes 18 pieces (9 two-piece dinos).