3M offers high quality Red-Dot Diaphoretic Cloth Electrodes with high-tack adhesive and supple cloth backing. The 3M Solid Gel conductive column will result in clear traces. The 3M SureSeal moisture vapor barrier cap prevents electrodes from drying out. The rectangular Red-Dot Diaphoretic Cloth Electrodes also have border adhesives to keep the electrode in place, even on moist skin. Electrodes measure 2.2 inch x 2 inch (5.1cm x 5.5cm) and include an abrader.