The top ring is striped over the hard penis and the cuff is tightened. After that you pull the second loop over the testicles and the lower cuff is tightened strong so there is no pain (tighten by feel - risk of congestion of the veins). Caution: You should tighten the cuff careful so that the skin is not pinched.
Features: black rubber round cord made of NBR - elastomer (nitrile),
