This product is made to Japanese male specifications. Designing, measuring and patterns are done in Japan and based on the standards of the Japan Sports Goods Industry Association (JASPO Standards). Size S: (Waist: 27.6 - 30.7 inches (70 - 78 cm), Height: 63.0 - 66.9 inches (160 - 170 cm), Size M: (Waist: 30.1 - 35.8 inches (74 - 82 - 175 cm), Size XL: (Waist: 32.0 - 75 inches (185 inches (185 - 185 cm).