For your consideration are a very unique slippery smooth pair of bikini mens panties.

These are hipster style, designed for men not women (unless you like the front puffy) For the ideal fit your waist/hips should be somewhere in the middle of the range not at the beginning or the end
Sizes are as follows:
S will range from 22-32"
M will range from 24-36"
L will range from 26-40"
XL will range from 28-44"