Titanium Ionic Braided Necklace - Basketball by Caseys. $19.95. Enhances focus. Increases stability. Washable. One size fits most. Ionic sport accessories are reported to enhance performance through the production of negative ions that counter balance positive ions created during physical stress. Ion is known to enhance focus and increase stability, provide relief from muscle stiffness and accelerate recovery time. The necklace will retain ion producing properties when washed or wet.