- RudeRider Fix Cock Ring Test-Set. Not sure which is the right size? Just order all available sizes in this set for testing!
- S: 40 mm / 1 5/8 inch (inner circumference: 5 inch). M: 45 mm / 1 3/4 inch (inner circumference: 5.5 inch). L: 50 mm / 2 inch (inner circumference: 6 inch). XL: 55 mm / 2 1/8 inch (inner circumference: 6.5 inch).