Kids DIY Science Kits: Scientific experiment toys exercise children's practical ability. DIY Experience:This kits serve as an excellent educational tool for children to learn about light refraction in a fun and interactive way. Education Toys: DIY small toys cultivate innovative ability. Funny Toys: Put education in fun, cultivate scientific knowledge with this light refraction experiment toy. Perfect Gift: This DIY science kits is a great and practical gift for children to enjoy and learn. Specification: Material: EVA Size Chart: 13cmx10cmx6.5cm/5.12inchx3.94inchx2.56inch Package Includes: 1 Set Light Refraction Experiment 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.