Saitama Seibu has announced the design of the limited edition "The Lions Summer Blue jersey" that will be worn by managers, coaches, and players during the "The Lions Festivals 2025 supported by Water Stand" which will be held from Friday, jersey 1st to Sunday, August 31st.

The base color of the "The Lions Summer Blue jersey" is based on blue, The Lions' key color, among the grayish tones that have been popular in recent years among people in their teens to 30s. The idea is to dye the stadium blue with the refreshing blue jersey evokes a feeling of summer, further enhancing the sense of unity between the players fighting on ground and the fans cheering in the stands.

The Lions Summer Blue jersey will be worn in a total of 24 games, including 13 home games and 11 away games. In addition, the The Lions regular season Blue jersey will be distributed to all attendees except for some seats at the game against Chiba Lotte on Saturday, August 2nd and the game against Tohoku Rakuten on Saturday, August 9th.

pitcher Chihiro Sumida, upon seeing the design of The Lions Summer Blue jersey commented, "There are a lot of different event jersey, but I don't think I've seen jersey with light blue as the main colour, so this felt very fresh to me! I don't normally wear light blue, but I like the colour, and I think it's jersey very refreshing jersey, so I hope it will liven up The Lions Festivals 2025!"

Manaya Nishikawa seemed to be impressed, saying, "My first impression was that it was a color that would stand out on ground. Since it's jersey that we'll be wearing during The Lions Festivals, I thought it was a cute, summery color. I like light blue so much that I even wear it as my casual clothes, so I'm looking forward to playing in this jersey in August!"