Tens Unit Pads [FDA 510(k) Cleared] Medical Grade Blue Extra Thick ElectrodesTens Unit Pads [FDA 510(k) Cleared] 20 Pieces Medical Grade Blue Extra Thick Electrodes MedTENS Best Gel Pads for TENS unit Massagers Medical Grade Extra Thick Gelled FDA Cleared 510K reusable pads. [MEDICAL GRADE QUALITY] High quality reusable sticky pads with wholesale prices. They are very durable and flexible. [EXTRA THICK GEL] To get the best of a tens unit, extra thick gel will allow you to receive pulse in most comfortable way. Easy to remove