DR-HO'S® Gel Pads Replacement Pair comes complete with a pair of large replacement gel pads. Use the Large Flex Tone Pads for a deeper penetrating and more soothing massage. The extra deep relaxation effects will feel great on large muscle areas and relieve muscle tension, numbness, and painFeatures: Perfect for large muscle groups.Great for shoulder pain.Effective for wrist and arm pain.High-quality & reusable.Excellent for leg pain. Self-adhesiveDirections: Attach the Large Flextone Electrode Gel Pads to the connecting wirePeel off the plastic protective cover - Please keep this cover, as you will need to cover the Flextone Pads after useApply water to the sticky surface of the gel pad and wait several secondsApply the Flextone Pads to the muscles that need reliefConnect the wire to the Pain Relief SystemEnjoy the massage and let the Pain Relief System sooth away your painAfter each use, please replace the plastic protective cover onto the sticky side of the Flextone Pads.Caution: Do not use if preganant or have a pacemaker.