Maximize your erection and intensify your experience with The Endurance Lock, an expertly crafted performance ring featuring a noble aluminum cuff and adjustable loops for enhanced firmness and prolonged pleasure. Dual Loop System: The system uses two loops for comprehensive restraint. The top ring is slipped over the hard penis and the cuff is tightened. You then pull the second loop over the testicles and the lower cuff is tightened. Adjustable Tightness: The cuff must be tightened strong so there is no pain (tighten by feel – risk of congestion of the veins). High-Quality Cuff: The noble cuff is made of hard-aluminium and treated with an anodized color. Silicone Properties: The flexible material offers high strength and elasticity. Durability: The material is very resistant against oils, gasoline and heat. Application Caution: Caution: You should tighten the cuff careful so that the skin is not pinched. Maintenance: Use a disinfectant for cleaning. Lock in your firmness and elevate your control. The Endurance Lock delivers superior performance and a noble aesthetic.