**Model - 5' 10", 158 lbs / 178 cm, 71.7 kg. Size L/W33.** Thick material may make the waistline feel 1–2 cm smaller. Please keep this in mind when sizing. Size Waist Seat XS 29.5" / 75 cm 38.6" / 98 cm S 31" / 79 cm 39.8" / 101 cm M 32.7" / 83 cm 41" / 104 cm L 34.3" / 87 cm 42.2" / 107 cm XL 35.8" / 91 cm 43.8" / 111 cm XXL 37.4" / 95 cm 45" / 114 cm Size Front Rise Thigh XS - 12.2" / 31 cm S - 12.6" / 32 cm M - 13" / 33 cm L - 13.4" / 34 cm XL - 13.8" / 35 cm XXL - 14.2" / 36 cm Size Length Leg Opening XS 39" / 99 cm 15.7" / 40 cm S 39.8" / 101 cm 16.1" / 41 cm M 40.6" / 103 cm 16.5" / 42 cm L 41" / 104 cm 16.5" / 42 cm XL 41.4" / 105 cm 17.3" / 44 cm XXL 41.8" / 106 cm 17.3" / 44 cm 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. **