Thank you for viewing. ARN-1027M(BKGN) Size L The 1027M is popular, along with the 1023M. FINA-approved product. We sincerely apologize, but please understand that we cannot lower the price of this product. We guarantee that the item is new, unworn, and unused. The price includes nationwide shipping. We can ship immediately. Below is an excerpt from the official explanation: The "AQUA ADVANCED" series is recommended for swimmers participating in regional competitions. This is a FINA (International Swimming Federation) approved model required for official competitions. By placing polyurethane horizontally around the body, and using the material "AQUA XTREME," which has approximately 5% higher vertical elongation compared to the conventional model "X-PYTHON2," this competitive swimming model made of knit material pursues ease of swimming. Size: L