SIDI T-5 Air Tri Shoes Tri Harder The SIDI T-5 is designed specifically for triathlon. The upper weathers rain and water without losing stiffness, and the closure system is easy to adjust and reliable. The T-5 is particularly suitable for giving your best during triathlon competitions. The High Security Velcro closure is simple but reliable, easy to adjust and fine-tune, especially on the bike. The newly designed integrated heel cup is lightweight and reinforced to avoid deformations during strenuous rides. The Carbon Composite Sole 20 is composed of nylon and injected carbon fiber. The result is a light and rigid sole, which does not lose its characteristics when climatic conditions change or with the passage of time. Features The High Security Velcro closure is simple but reliable, easy to adjust and fine-tune, especially on the bike Newly designed integrated heel cup is lightweight and reinforced to avoid deformations during strenuous rides The Carbon Composite Sole 20 is composed of nylon and injected carbon fiber. The result is a light and rigid sole, which does not lose its characteristics when climatic conditions change or with the passage of time For walkability, SIDI cycling shoes include a replaceable polyurethane heel pad SPECIFICATIONSUpper Material Synthetic Closure type Velcro Outsole Carbon Composite Cleat Compatibility3-Bolt Intended Use Triathlon, Road | Sidi | T-5 Air Tri Shoes Men's | Size 42. 5 In Black/black | Nylon