Size Customizable Round Cock Ring

Material: Stainless Steel 

Thickness of the ring:4mm/5mm/6mm/7mm/8mm/9mm/10mm

Inner diameter of the ring is customizable.

Use a quite thin rope to measure the circumference aound where the ring be worn and divide by 3.14 to get the diameter. Usually you should consider to reduce the diameter a bit, because the cock ring needed to be a little tight when wearing.