: Each one of this package is flexible and to the touch, helping you get the most from your TENS machine. They also feature durability and re-sealable packaging for a longer lifespan. Theyare classic and commonly used in medical area, which makes it easier for you to find compatible accessories. Features: - Color: White. - Material: Silicone. - Size: 8 x 5.5 x 0.2cm (LxWxH). - Suitable for various low frequency electronic physiotherapy machine. - Help to improve blood circulation, promote metabolism and eliminate fatigue. - Self adhesive, high adhesive, convenient to use and reusable. - Useful and safe accessory for medical care. - Notice: Need matching with therapy equipment to realize therapy effect, normal work, should confirm the black side of electrode slice face onto your skin. - Warm Tip: Dear buyer, due to lighting effect, monitor& 39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand