Large Complementary Color Star by Grimm'sThis building set and creative puzzle in one encourages an intuitive feeling for colors and forms, spatial skills, logical thinking and develops fine motor skills. Details: 18 pieces in a wooden frame Materials: lime wood, non toxic water based color stain non toxic plant based oil finish Size: diameter 25cm, single blocks 4cm thickness Recommendation age: 3+ Age Grade (toy safety): 3+