Dunlop, an early adopter of vulcanization, began making sneakers in the 1870s. By the 1930s, the company had become renowned for making tennis shoes. The British tennis champion Fred Perry wore Green Flash sneakers in three consecutive Wimbledon wins from 1934 to 1936, raising the profile of the brand among fans and players alike. However, to preserve his amateur status, Perry was never able to outwardly endorse the shoe. The padded top line is designed to increase comfort.