Best known for its classic Italian footwear, Salvatore Ferragamo has unveiled a sportier side with a collection of 15 men’s sneakers this winter. The sneaker lineup (priced from $594 to $3,740) is part of the brand’s effort to define the modern Ferragamo man, who has a tailored and sporty image. The sneakers debuted in tandem with “A Man’s Story,” an online series of videos, portraits, and interviews featuring seven influential tastemakers from around the globe—including the professional hockey player Henrik L…