M1R2 - has an adjustable pouch (to make it skimpier) that is seamed for a contour fit. This pouch is 2" lower with less volume than the (M1R) style mens G string bathing suit. This is the ultimate tanning swimsuit for men.
M1R - has an adjustable pouch (to make it skimpier) that is seamed for a contour fit. The "R" means it has either a gold or silver tri-ring ornament in the back.