Mizuno’s 170 12-inch softball was designed with over 100 years of superior ball-making experience to provide high-level performance and longevity to make it the perfect softball choice. Featuring premium synthetic leather and our Reactor Core, the Mizuno 170 softball is crafted to Mizuno's strict attention to detail and standards. Through the WBSC-Mizuno partnership, that runs through to 2025, the Japan-based company is appointed as the official softball and umpire equipment supplier for all WBSC softball events, including Men’s and Women’s Softball World Cups. As part of a long-lasting partnership with the World Baseball Softball Confederation (WBSC), the Japanese sports equipment giant Mizuno presented the new softball model to be used in all WBSC Softball World Cups, starting with the WBSC Women’s Softball World Cup Group Stage in 2023. The Mizuno M170 will replace the M150 as the official softball of WBSC Softball World Cups.