S  M L
PTP 15.5" 16.5" 17.5"
Waist 12.5" 13.5" 14.5"
Length 15" 15.5" 16"

*Model is 1.68m, UK 6 (PTP 15.5", Waist 12.5") and wears size S.

If you are in between size for PTP/Waist, it is best recommended to size down.

*In between sizes refers to your measurements falling between 2 sizes, example size S & M.