Available for immediate purchase. Due to circumstances, shipping will be unavailable from the morning of December 28th (Sunday) until January 4th (Saturday). Please be aware of this if you need it quickly. ● Material: FRP + Urethane ● Made in Japan ● Comes with a dedicated case Hitting area urethane thickness: 23mm. The new MM series answers the call to "hit it further." In addition to the 23mm thickness, the rebound rate is up 8.4% due to improvements in the urethane composition! (Compared to MM18) Amateur baseball Softball Bat M ball SSK