20 PCS Unit Replacement Pads 50X50mm Machine Pads for Tens Self-Adhesive Electrode Pads Reusable Unit Electrode Pads Black and White Unit Patches Unit Pad Compatible with Tens Product description Material: non-woven fabric Color: Wood Color Size: 21x29.7 cm Packing list: 5 PCS Description Structure: Our unit replacement pads are made of high-quality non-woven fabric, which is reliable, safe and reusable. Our machine pads are flexible and soft to the touch, helping you get the most out of your TENS machine. The self-adhesive electrode pads are very soft and can be firmly fixed on most parts of the body without falling off. Whether it is relieving tension in the neck, lower back or legs, the unit patch can provide you with precise treatment. The unit electrode pads are very soft and can be firmly fixed on most parts of the body without falling off. Whether it is relieving tension in the neck, lower back or legs, the unit patch can provide you with precise treatment. Made with upgraded industry-leading adhesive, the unit pad has excellent self-adhesive performance, is easy to clean and can be used up to 45 times. The unit electrode pads are non-irritating and suitable for all skin types.