S  M L
PTP 15.5 -16" 16.5 -17" 17.5 -18"
Waist  14.5" 15.5" 16.5"
Length 19" 19.5" 20"

*Model is 1.68m, UK 6 (PTP15.5", Waist 12.5") and wears size S.

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

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