This is the successor series to the MM23. The limited edition SSK MM Junior, which sold out instantly online. It seems that only about 90 of these were available in the Kanto region, so the stock is likely low nationwide. Size: 80cm, 580g Max Diameter: 69mm Material: FRP + Urethane Balance: Top Balance Color: Black x Red This is a junior model with a thick design using the same urethane as the MM23. Comes with a dedicated bat case. Thank you. #MM23 #SSK