XS S M L XL
PTP 15.25" 16.25" 17.25" 18.25" 19.25"
Waist 12.75" 13.75" 14.75" 15.75" 16.75"
Length 15.75" 16.25" 16.5" 16.5" 16.75"

*Model is 1.73m, UK 4/6 (PTP 15.5", Waist 12") wears size S.

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

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