For mad scientists and those who just love to learn, these Science Party Rubber DNA Bracelets make for a great addition to party supplies. In purple, red, blue and green, these bracelets feature a fun design of periodic elements. Stuff in party bags or give to little smartys as they show up for your scientific soirée. Shop more science goodies and party supplies online. Rubber. 7 1/4" circ. 4 per pack in an assortment of the colours shown.