The Seibu Lions unveiled alternate uniforms they will be wearing during Lions Festivals 2017. Kazuhisa Makita, Ginjiro Sumitani, and Shogo Akiyama modeled the uniforms during a post-game press conference on April 8.
Lions Festivals 2017 Schedule
(fifteen home games, nine away games)
Fans attending games on July 22, 23, and August 5 (excluding fans with tickets to the right field non-reserved visitors section seats) will receive a free replica uniform.
Source: Seibu 4/8/2017