Ouch Silicone Cuffs Black. Dominate your lover with these fully adjustable and stretchy cuffs made of 100% silicone. With 6 size settings for your wrists or ankles. The soft, silicone material feels great against your skin and will not burn or chafe. Be creative and use your imagination to explore all the exciting possibilities. Use this toy on its own, or in combination with more Ouch! products. Material 100% Silicone. Stretchable. 6 adjustable sizes.