For your consideration are a very unique slippery smooth pair of bikini men's panties in a very rare, extremely high gloss fabric.

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: 22-32"
M: 24-36"
L: 26-40"
XL: 28-44"
XXL: 30-48"