ValuTrodeÊFoam neurostimulation electrodes feature the same construction as ValuTrodeÊCloth electrodes but with a white foam top. Every lead wire interface is customized for each electrode to optimize current distribution for all the various shapes and sizes. Featuring a multi-layer MultiStickÊhydrogel, ValuTrodeÊelectrodes are known for their durability and multiple applications to the skin. These electrodes each measure 1.25 inches and are round in shape. Pack of 4.