The Dura-Stick plus electrodes are compatible with a wide range of TENS machines for all programmes and uses. A strong adhesive, waterproof back ensures the electrodes remain attached to the skin even when showering or bathing. While the cloth materials ensures optimal levels of comfort. The electrodes are available in either square or rectangle to allow for different application site conformations. Can be used with most TENS machines and are available is packs of 4.