â— Size Chart: Asian sizes, you may need to select 1 or 2 size up than your normal size. Size------------------Waistline size Medium-------------26.0-28.3 inch / 66-72cm Large----------------28.3-30.7 inch / 72-78cm X-Large-------------30.7-34.6 inch / 78-88cm XX-Large-----------34.6-38.5 inch / 88-98cm