The Seibu Lions held a press conference today to unveil the uniforms they will be wearing for Lions Classic 2018. Takumi Kuriyama and Takeya Nakamura modeled the uniforms for the press.
The uniforms are based on designed used between 2004 and 2008, when the Lions won two championships (2004 and 2008).
Replica uniforms will be given away to ticket holders on April 17.
Source: Seibu 2/5/2018