Solidarity / Solidarnosc t-Shirt Polish Trade Union 1980s Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Solidarity - Polish Trade Union and Movement in the 1980s. The 1st Independent Trade Union in a Soviet Bloc Country. Solidarity is considered to have contributed greatly to the fall of communism. Lech Walesa. Polska Poland. White Red Flag. Bialo Czerwona Flaga. This Distressed Retro tee is perfect as a gift for birthday or Christmas, Halloween or even Anniversary and Graduation. This Vintage t-shirt will be perfect for you, anyone from your family or a friend. Lightweight, Classic fit, Double-needle sleeve and bottom hem