The Four Elements Building Set invites children to create wonderful, unique structures while developing spatial perception skills. The variety of the organic forms inspires fantasy and imagination. Older children who have more experience building will immediately think of many creative possibilities. The non-lacquered surface is slightly rougher, making it easier for building, even for younger children. Our building sets complement each other perfectly. Children can create even more unique variations and play settings by combining forms and shapes. 23 buidling blocks in wooden frame. Materials: lime wood, non-toxic water based color stain/non-toxic plant based oil finish. Size: frame length 44.5cm, single blocks 4cm thickness.