Explore what ice crystals and snow flakes are made of, how they're formed and why they are always 6-sided. This Zometool project kit includes 90 pieces (60 struts and 30 nodes), instructions for building 10+ beautiful models, in a reusable container for easy storage. Can be expanded by combining with other Zome kits. SMALL PARTS WARNING: May pose a choking hazard for children under age 3. Made in the USA for ages 3+.