These are a fun addition to your accessories collection. Made of dense foam, they are very light. Stand on it, or cut them out to insert into your own footwear. They have connections available for both snap and 2mm pin.
Therapeutically, the electrode conductors are at accupressure points and give an amazing foot massage. Originally designed for diabetic neuropathy, these points also enhance sexual pressure at low voltage. At higher voltage, well, use your imagination for predicament play and other pleasant pastimes.