For your consideration are a very unique slippery smooth pair of bikini men's panties. Order while you can.

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 22-34"
M will range from 24-36"
L will range from 26-40"
XL will range from 28-44"
2X will range from 30-46"