ELECTRODE, TENS RECTGL FOAM 1.5X3.5" (4/BX 10BX/CS) ValuTrode Foam neurostimulation electrodes are constucted of cloth with a white foam top Every lead wire interface is customized for each electrode to optimize current distribution Featuring Axelgaard's patented multi-layer MultiStick hydrogel which ensures maximum durability and multiple applications to the skin 4 electrodes per box and 10 boxes per case