Red Solo Party Cups resellers in Buenos Aires, Argentina. These cups are great for playing beer pong and flip cups party games. They are the same you see in american movies like American Pie and Project X and Glee series. Vasos Rojos Americanos. Buy Red Solo Party Cups in Buenos Aires, Argentina. Plastic cups of 16oz (475ml). We sell the original Red Solo Cups, seen in countless American movies and TV shows. They have become an iconic symbol of an awesome party. Solo Party Cups are made from a highly durable, high quality plastic and their unique design makes them instantly recognisable.