S-phyre Triathlon Shoes Optimized For Blazingly Quick Transitions And Race-grade Pedaling Performance.Features:- High rigidity, hollow carbon midsole efficiently drains water and dries feet after the swimming stage.- BOA® Li2 dial supports precise micro-adjustments to create the optimal fit for intense sprints and long-distance comfort.- Fast-drying T1-Quick strap with an extra-wide opening simplifies and quickens transitions.- Supportive heel stabilizer cradles the foot in the optimal position when transitioning to the bike and accelerating intensely.- Water-resistant synthetic leather upper with strategic quick-drying mesh panels to boost ventilation.- Barefoot-friendly liner with soft padding for comfy sockless riding.- Large heel loop is easier to grab to quickly secure the shoe during transitions.Specifications:- Last type: SHIMANO DYNALAST- Stiffness index: 10- Best match pedal: PD-R9100- Features Wider cleat adjustment range: Yes- Features Seamless midsole structure: Yes- Features Surround wrapping upper: Yes- Features Heel stabilizer: Yes- Features Carbon sole/Mid sole: Yes- Technology SHIMANO DYNALAST: Yes- Technology Silvadur®: Yes- Closure: BOA® Fit System featuring Dial Li2, Quick strap- Upper Material: Microfiber synthetic leather+Mesh- Outsole Material: TPU (cover)- Midsole Material: Carbon fiber composite- Standard insole: High density cup insole with adaptable arch pads- Actual weight: 254gTechnology:Xc & Cyclo-cross Race- Tuned Upper:- Lightweight cross country and cyclo-cross race-tuned upper offers breathable comfort in severe weather and terrain.Heel Cup With Anti-twist Stabilization: - Heel cup with anti-twist stabilization secures optimal foot positioning for intenseacceleration and high-tempo cadences.Robust & Precise Micro- Adjustments: - Dual low-profile BOA® Li2 dials allow precise micro-adjustment, with the shielded BOA® Li2 Type F bottom dial protected against accidental releases from impacts.Sleek, Low-profile Crossover Lacing Pattern:- Sleek, low-profile crossover lacing pattern elegantly secures the forefoot.Lightweight Shimano Ultread® Xc Rubber Outsole Lightweight Shimano:- ULTREAD® XC rubber outsole with a highly technical tread pattern provides exceptional racing grip.Removable Talon-shaped Metal Spikes: - With the included talon-shaped spikes, riders can choose lightweight performance or optimal traction.Low Stack Height Carbon Midsole: - Low stack height midsole stabilizes the foot and optimizes power transfer efficiency.