When the OG Puma RS (Running System) was first introduced in 1986, it was considered to be groundbreaking for its time. With its advanced features that allowed runners to measure distance, record data, and monitor calories burned, this retro shoe revolutionized the way athletes tracked their performance. Recently re-released in December 2018, Puma has managed to preserve the classic leather and textile upper of the original design, while enhancing it with modern Bluetooth technology. Additionally, the shoe now conveniently features a USB port for charging, eliminating the need for the outdated 16 pin cord from the 80s. This updated version of the RS provides runners with the perfect blend of nostalgia and cutting-edge technology.