Perfect Fit has developed the first cock ring sizing system designed to fit you without too much pull but with enough restriction to be truly effective.

Ring Number 14: 1.4 inches in diameter, 4.4 inches circumference
Ring Number 17: 1.7 inches in diameter, 5.3 inches circumference
Ring Number 20: 2 inches in diameter, 6.3 inches circumference

M/L

Perfect Fit has developed the first cock ring sizing system designed to fit you without too much pull but with enough restriction to be truly effective.

Ring Number 17: 1.7 inches in diameter, 5.3 inches circumference
Ring Number 18: 1.8 inches diameter, 5.7 circumference
Ring Number 19: 1.9 inches in diameter, 6 inches circumference

L/XL

Perfect Fit has developed the first cock ring sizing system designed to fit you without too much pull but with enough restriction to be truly effective. 

Ring Number 20: 2 inches in diameter, 6.3 inches circumference
Ring Number 21: 2.1 inches diameter, 6.6 circumference
Ring Number 22: 2.2 inches in diameter, 6.9 inches circumference