The ring is slipped over the hard penis and the cuff is tightened (tighten by feel - risk of congestion of the veins). Caution: Tighten the cuff carefully so that the skin is not pinched. Properties: black round rubber cord made of NBR elastomer (nitrile), Ø 5 mm, hardness: 70 Shore. High strength and elasticity. Very resistant to oils, petrol and heat. The elegant sleeve is made of hard aluminium and is treated with an anodized paint. You should use a disinfectant for cleaning, e.g. MALESATION Cleaner Toys & Body.
