On the 16th, Lotte announced three new uniforms that will be worn starting from the 2026 season.

　“TRINITY” （三位一体）をデザインコンセプトに、従来のHOMEユニホーム、VISITORユニホームに加え、新たにALTERNATE（オルタネート）ユニホームを採用し、チームカラー3色で構成。それぞれのユニホームには、チームの信条（OUR BELIEF）である「CHALLENGE（挑戦）・ENTHUSIASM（熱狂）・UNITY（結束）」を意味付けた。

The traditional pinstripe home uniform, which has been carried over since 1995, represents "Challenge," the jet-black visitor uniform with "CHIBA" on the chest represents "Enthusiasm," and the alternate uniform, which is based on gray, a shade between black and white, represents "Unity."

The sleeves of the Visitor and Alternate uniforms feature a thinner "Belief Line" in black, white, and gray, creating a more modern look. The name and number have a redesigned font and are made with Mizuno's latest, lighter material, creating a three-dimensional monotone look with embroidered borders.

The ALTERNATE uniform will be worn for some of the first-division home and away games, as well as all of the second-division away games. The ALTERNATE uniform will be worn from practice games and exhibition games, while the HOME and VISITOR uniforms will be worn from the opening game on March 27th onwards.

All three uniforms will have the same cap. In conjunction with this announcement, The Marines Online Store has begun selling replica and authentic uniforms for HOME, VISITOR, and ALTERNATE. For details on the sales, please see the team's official website.