For your consideration are a very unique slippery smooth pair of satin 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 22-30" 
M will range from 24-34" 
L will range from 28-38" 
XL will range from 30-44"