Introducing the Conair TN100 TENS Electrotherapy Wrap, for Pain Relief. Using transcutaneous electrical nerve stimulation technology this device quickly blocks pain and provides instant relief. FDA has cleared this as an all-natural OTC pain reliever. The flexible wrap makes it versatile and easy to use on sore, achy muscles - apply to back, waist, shoulder, arm, leg, knee or elbow. The flexible wrap is one size and fits most. Featuring customizable settings with 5 modes and 20 intensity levels allow this device to create personalized treatments. Includes one adhesive pad that is good for up to 50 uses. Small, portable, and easy to use.