Take one of these rings and slide it on behind the testicles. Once it's applied, the cock ring will help regulate the blood flow that leaves the cock, resulting in a longer-lasting erection for you and more pleasure for your partner.
Specs: Endurance Penis Ring Set
Size: Rings measure 0.3 to 0.75 inches inner diameter unstretched
Use your choice of ring to apply behind the cock and balls
Helps regulate blood flow for a longer lasting erection