The "Eisernen" (Iron Ones). 1. FC Union Berlin is built on the resilience of its fans, who literally helped construct their own stadium with their hands. The Alte Försterei is a pilgrimage site for football purists. Red and white from Köpenick, a club where identity cannot be bought. This collection features officially licensed Union Berlin football shirts, training wear, and apparel. Vintage designs and current releases, all quality-verified.