The 2026-27 Union Berlin home shirt features the club's traditional red base with a tonal, embossed geometric pattern. This intricate design is inspired by the iconic steel roof construction of the club's home ground, Stadion An der Alten Försterei. Complementing the classic red are crisp white details, including the adidas three stripes on the shoulders, the brand logo, and the sponsor logos on the front and sleeves. The kit is finished with a red V-neck collar featuring white trim and a woven club crest on the chest.