PF Flyers trainers were patented in 1933 and the Posture Foundation insole became the basis for the brand name in 1937. This early attention to comfort forever changed the trainer landscape, heralding the myriad of ergonomic advancements in trainers today. PF also distinguished itself from its peers by offering a fashionable range of trainer-based styles beyond athletic footwear. With a penchant for clean, modern design and a tradition of premium craftsmanship, the PF archive boasts iconic styles from nearly every era. Gem of the original American trainer brands, PF continues to define classic casual style in authentic reissues and evolved silhouettes. With a striking modern eye and heritage design details, PF composes the latest premium textiles and fine Old World materials.