<P> DuPont changed its campaign strategy, emphasizing that nylon was made from "coal, air and water", and started focusing on the personal and aesthetic aspects of nylon, rather than its intrinsic qualities . Nylon was thus domesticated, and attention shifted to the material and consumer aspect of the fiber with slogans like "If it's nylon, it's prettier, and oh! How fast it dries!". </P> <P> After nylon's nationwide release in 1940, production was increased . 1300 tons of the fabric were produced during 1940 . During their first year on the market, 64 million pairs of nylon stockings were sold . </P> <P> While nylon was marketed as the durable and indestructible material of the people, it was sold at almost twice the price of silk stockings ($4.27 per pound of nylon versus $2.79 per pound of silk). Sales of nylon stockings were strong in part due to changes in women's fashion . As Lauren Olds explains: "by 1939 (hemlines) had inched back up to the knee, closing the decade just as it started off". The shorter skirts were accompanied by a demand for stockings that offered fuller coverage without the use of garters to hold them up . </P> <P> However, as of February 11, 1942, nylon production was redirected from being a consumer material to one used by the military . DuPont's production of nylon stockings and other lingerie stopped, and most manufactured nylon was used to make parachutes and tents for World War II . </P>

What superior properties does nylon have over the natural alternative