UV Detecting Beads Pack
Ideal for teaching sun safety, these UV-sensitive beads contain pigment that changes color when exposed to UV light. Beads remain pale when indoors or when shielded from UV light. Can be strung on rawhide to make necklaces and bracelets. One pack of beads makes approximately 25 bracelets using 9 yards of rawhide. Approximately 240 beads per pack in assorted colors.