BE AMAZING TOYS-Amazing Spheres. Grow humongous clear balls and monster colored marbles! Just add water. Package includes one test tube, clear spheres, garbled marbles and instructions. Recommended for ages 4 and up. WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years. WARNING: This set contains chemicals that may be harmful if misused. Conforms to ASTM F963. Imported.