The T-2 Triathlon feature Sidi's rigid Millennium II soles that deliver incredible power transfer for exceptional bike splits. You’ll also love how the supple Lorica uppers and heel cups mold to your feet for a custom fit and incredible comfort. Plus, the clever no-tongue design speeds your transitions and the neoprene lining feels great even during sockless sprint sessions. Sidi was one of the first companies to make tri-specific shoes and they still make the best.