Please use this info as a general guide as measurements are approximate. Model is 5' 10"/ 178cm and 159lbs/ 72.5kg. He wears a size W31. Size Waist Hip W29 29.5" / 75cm 41.7" / 106cm W30 30.7" / 78cm 42.5" / 108cm W31 31.9" / 81cm 43.3" / 110cm W32 33.5" / 85cm 44.1" / 112cm W34 35.4" / 90cm 46.1" / 117cm W36 37.4" / 95cm 48" / 122cm W38 39.4" / 100cm 50.4" / 128cm Size Front Rise Back Rise W29 12.8" / 32.5cm 16.9" / 43cm W30 13" / 33cm 17.3" / 44cm W31 13.2" / 33.5cm 17.7" / 45cm W32 13.4" / 34cm 18.1" / 46cm W34 14" / 35.5cm 18.5" / 47cm W36 14.6" / 37cm 18.9" / 48cm W38 14.8" / 37.5cm 19.3" / 49cm Size Thigh Inseam W29 26.8" / 68cm 32.3" / 82cm W30 27.2" / 69cm 32.7" / 83cm W31 28" / 71cm 33.1" / 84cm W32 28.3" / 72cm 33.5" / 85cm W34 28.7" / 73cm 33.9" / 86cm W36 30.3" / 77cm 34.3" / 87cm W38 30.7" / 78cm 34.6" / 88cm Size Length Leg Opening W29 44.1" / 112cm 18.1" / 46cm W30 44.5" / 113cm 18.9" / 48cm W31 44.9" / 114cm 19.7" / 50cm W32 45.7" / 116cm 20.5" / 52cm W34 46.5" / 118cm 20.5" / 52cm W36 47.2" / 120cm 21.3" / 54cm W38 48" / 122cm 21.3" / 54cm In order to best determine fit, it may be helpful to compare our garment’s measurements to a similar garment you already own. Lay your garment on a flat surface and take all measurements from the outside of the garment. Click here to check out our Garment Measuring Guide. ** If you are still confused, you can Contact Us to help you choose the size. **