M - The Frankie Shop Beige NEW Women's Pull-On Lui Soft Boxer Shorts 0415AU

Measurements: 

Because sizes tend to vary among brands, we take approximate measurements with the garment lying flat and unstretched.

For the best fit, take a tape measure and compare a similar garment from your own to  find out what size you are. The following measures are essential: 

Waist (Laying flat): 13"

Rise: 16"

Inseam: 2.5"