Manual measurement,due to different individual techniques,1-3cm error is normal,not quality problem. Note:The size in our store is for Asian,it is 1~3(0.39-1.18inch)size smaller than Europe/US size,we suggest to purchase 1-3(0.39-1.18inch) bigger size than usual.If you are not sure about the size,please let us know your weight,and waist Info ect. So that we an help you to choose the correct size. size Whole length           waist             Hip           Thigh   cm inch cm inch cm inch cm inch M 98 38.58 78 30.70 104 40.94 - - L 100 39.37 82 32.28 106 41.73 - - XL 102 40.15 86 33.85 108 42.51 - -   XXL 104 40.94 90 35.43      110 43.30 - -