New technologies brought advances in production through mass production, higher efficiency, generating higher standards and uniformity. Generally the most famous silhouette of the mid and late 1970s for both genders was that of tight on top and loose on bottom. The 1970s also saw the birth of the indifferent, anti-conformist casual chic approach to fashion, which consisted of sweaters, T-shirts, jeans and sneakers. The French designer Yves Saint Laurent and the American designer Halston both observed and embraced the changes that were happening in the society, especially the huge growth of women's rights and the youth counterculture. They successfully adapted their design aesthetics to accommodate the changes that the market was aiming for.