Sizes are Small, Medium, Large, and X-Large This product is made to Japanese specifications. Designing, measuring and patterns are done in Japan and made according to the JASPO Standards Association of Japan Sporting Goods Industry Association (JASPO Standards). Reference Size Chart: Size S (Waist 26.8 - 29.1 inches (68 - 74 cm), Inseam 28.7 inches (73 cm), Size M (Waist 29.1 - 31.5 inches (74 - 80 cm), Inseam 29.9 inches (74 cm), Size L: Waist 33.9 - 32 inches (76 inches (76 inches (76 cm).