Rubber-aluminum chain mail.
An example of the element Aluminum

Rubber rings in chain mail are something fairly new. They have caught on quickly since they can be used for simple, cheap bracelets or cuffs without clasps, as well as form-fitting bikinis. The usual rubber rings are EPDM and come in many colors. The rings in this piece, however, are silicone rubber and contain doped strontium aluminate. The silicone rings are both less wear resistant and stretchy than the EPDM rings, but unlike EPDM, they are translucent so they glow properly. They are linked together with 5356 alloy aluminum rings in a modern weave called viperscale.