OrthoTrode 2" Round Cloth TENS Electrodes, Re-usable, CASE (4/Pack, 10pk/cs). Orthoco's OrthoTrode cloth-backed TENS electrodes are stickier than previous versions and were designed for multiple uses. This is a cloth-backed electrode and should not be used under moist heat packs or cold packs. Each pack is resealable. These are "excellent" electrodes for the price. *International Shipping Available.