Shimano S-Phyre SH-TR903 Shoes The Shimano S-Phyre SH-TR903 Shoes are designed for triathletes looking to optimize their transitions and performance in competition. With advanced construction and high-tech features, these shoes are the perfect choice for triathlon. Surface: On-road/Triathlon Shoe type: Neutral Use: Competition Closure: BOA Weight: N/A Plate: Hollow carbon midsole