Latex-free * The Starburst Electrode Incorporates A Patented Multi-layer Gradient Pattern Providing The Most Advanced Current Distribution System Available * This Unique Gradient Pattern Is Made Of Pure Silver Known As A Superior Conductive Material And Optimal For Stimulating Electrodes * Starburst Electrodes Feature An Exclusive Hypoallergenic Hydrogel With Pure Aloe Vera * The Thick Hydrogel Layer Provides Superior Adherence Even After Multiple Uses