when did red solo cups start being made
Solo Cup Company In the 1970s, Hulseman's son, Robert Leo Hulseman, came up with the now-ubiquitous red Solo cup. The red Solo cups are made of thick, molded polystyrene. They are known for being able to withstand drops, easily stackable, and disposable while price accessible. Their characteristic red color may conceal the drinking contents.[5]
Cup (unit) The cup currently used in the United States for nutrition labelling is defined in United States law as 240Â mL.[1][2][3]