The Prevent bracelet creates goodness on so many levels! Each three-stranded bracelet is not only handmade by women artisans in India, but it also provides funds to help prevent school violence. We donate 15% of the wholesale price of the bracelet to Sandy Hook Promise. Donations are made based on purchase quantity, not product sales. Beads measure .125" wide and are made of glass and a brass/metal mix. Bracelets stretch to fit most wrists.