the past 500+ years. The mechanization of the textile industry made many varieties of cloth widely available at affordable prices. Styles have changed, and the availability of synthetic fabrics has changed the definition of what is "stylish". In the latter half of the twentieth century, blue jeans became very popular, and are now worn to events that normally demand formal attire. Activewear has also become a large and growing market. In the Western dress code, jeans are worn by both men and women. There are several unique styles of jeans found that include: high rise jeans, mid rise jeans, low rise jeans, bootcut jeans, straight jeans, cropped jeans, skinny jeans, cuffed jeans, boyfriend jeans, and capri jeans. The licensing of designer names was pioneered by designers such as Pierre Cardin, Yves Saint Laurent, and Guy Laroche in the 1960s and has been a common practice within the fashion industry from about the 1970s. Among the more popular include Marc Jacobs and Gucci, named for Marc Jacobs and Guccio Gucci respectively. Spread of western styles By the early years of the twenty-first century, western clothing styles had, to some extent, become international styles. This process began hundreds of years earlier, during the periods of European colonialism. The process of cultural dissemination has been perpetuated over the centuries, spreading Western culture and styles, most recently as Western media corporations have penetrated markets throughout the world. Fast fashion clothing has also become a global phenomenon. These garments are less expensive, mass-produced Western clothing. Also, donated used clothing from Western countries is delivered to people in poor countries by charity organizations. Ethnic and cultural heritage People may wear ethnic or national dress on special occasions or in certain roles or occupations. For example, most Korean men and women have adopted Western-style dress for daily wear, but still wear traditional hanboks on special occasions, such as weddings and cultural holidays. Also, items of Western dress may be worn or accessorized in distinctive, non-Western ways. A Tongan man may combine a used T-shirt with a Tongan wrapped skirt, or tupenu. Sport and activity For practical, comfort or safety reasons most sports and physical activities are practiced wearing special clothing. Common sportswear garments include shorts, T-shirts, tennis shirts, leotards, tracksuits, and trainers. Specialized garments include wet suits (for swimming, diving, or surfing), salopettes (for skiing), and leotards (for gymnastics). Also, spandex materials often are used as base