Professional design ensures maximum stimulation comfort and provides optimum conductivity. Lower impedance, more uniform current distribution. These pads work with most machines that accept standard connectors and are made of conductive rubber. Designed for high conductivity. Features -Color: White, -Material: conductive gel, non-woven cloth, water fiber. -Size: 5.00X5.00X0.20cm/1.97X1.97X0.08inch. - Plug Hole: 2.0MM. - Made of premium material, very special and practical. - High conductivity, low impedance, and uniform current distribution. - Reuseable electrode pads made of breathable fabric, and flexible for joints, stay attached well. - Flexible, comfortable, and easy to apply, sticks on lasting comfort, and easy to peel off. - Self-adhesive electrode pads are very durable and flexible.