Science Experiment Kit: DIY Gravity Tensegrity Floating Building Toy, creative building model kit. Material: High quality wooden material, environmental protection, smooth surface, no burrs, sturdy. Education Toys: Understand scientific principles through the model, learning scientific knowledge and improving learning ability, cultivate children practical ability and knowledge. Early Education: Cultivate children interest in learning and thirst for knowledge, improve children innovative ability and creative thinking, promote divergent thinking and problem solving skills, and inspire creativity and brain development. Gift: The Science kit is suitable for kids ages 6-12, suitable for Birthdays and festivals. If parents could join in the games with kid, that will be good memories for kids' childhood. Specification: Product Size: 13cmx7cmx7cm/5.12inchx2.76inchx2.76inch Material: Wood Package Includes: 1DIY Gravity Floating Building Toy Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.