1.Change color under the sunshine 2.uv bead colour change bracelet test the effectiveness of sunscreen

 Make exciting and safe UV detector bracelets. Great for camp projects. Assorted colors. This is a wonderful way to study solar energy. This kit allows young children to experiment with the concepts of reversible photochemical reactions.  Kit includes:

30 solar beadsrawhide laceinstructions

Small order you can directly enter into our aliexpress shop directly purchase from  http://www.aliexpress.com/store/705928

uv bead set uv bead kit for child