This cock ring is as fun as a summer night filled with the light of fireflies. The Firefly Halo is always easy to put on thanks to its glow-in-the-dark quality and stretchy silicone material. 

are meant to be worn at the base of the penis and underneath the testicles, to limit blood flow out of an erect penis. If the cock ring is too tight, place it overnight on a lotion bottle to loosen up the ring.