1. Material: wooden 2. Weight: about 250g/set 3. Size: wooden box about 16.3x6.5x6cm 4. Applicable age: 6 years old and above 5. Function: exercise spatial thinking ability 6. Features: safe material, fun and interesting. Fine workmanship, no burr, smooth surface. It can exercise children hands-on ability and learning ability. 7. Packing includes: octagonal ball, pyramid, soma cube, wooden box