Nylon Stockings Day
On May 15, 1940, nylon stockings went on sale for the first time. Four million pairs sold in four days. Women lined up around city blocks. DuPont had invented nylon in 1938, and the stocking rollout was one of the most successful product launches in American history. During WWII, nylon was diverted to the war effort for parachutes and ropes, and women drew seams on their legs with makeup to simulate stockings. This is one of those facts that sounds like trivia but is actually about how a single material changed the daily experience of half the population.