Mayfly TN [2008]Like its winged namesake, the Nike Mayfly was intended to live for one day only race day. In the early 2000s when the model was in its sample stage it was known as the Marathon Racer. Initial prototypes are said to have been mocked up with materials found on FedEx postal packaging, designed to retain a certain level of strength and stay waterproof to a degree maybe Tyvek? Before the model released it was passed over to the brains in marketing who