Szie Reference
           M:length 64cm， Abdominal circumference 78~110cm， leg 40~56cm，suitable height within160cm， suitable weight within 55kg
            L:length 66cm， Abdominal circumference 84~120cm， leg 42~60cm，suitable height 160~170cm， suitable weight 50~65kg
           XL:length 68cm， Abdominal circumference 90~130cm， leg 44~64cm，suitable height 165~175cm， suitable weight 65~80kg