At the same Olympics, East German swimmers adopted suits that were tightly following the body shape, the so-called "skinsuits". They were initially made of cotton and became virtually transparent when wet. The revealing shape and transparency caused outrage among US swimmers; meanwhile, at the 1973 World Aquatics Championships, East German women won 10 of 14 events and set seven world records. Those championships became the turning point for the world to adopt the skinsuit, modified with novel synthetic materials, as a standard competitive swimwear.