S-PHYRE racing shoes built for sprinters track crit or TT riders seeking maximum power transfer Race-tuned closure system with a BOA® Li2 metal dial power boost guide and toe strap reduce foot movement and enhance power transmission Race confidently while you let those behind you admire the dazzling color-shifting crystal finish on the outsole and heel Breathable stretch-resistant upper keeps feet stably in place to improve power transfer Heel cup with anti-twist stabilization secures optimal foot positioning for intense acceleration and high tempo cadences Midsole-wrapping upper blends with the tongue to form a glove-like fit for remarkable pedaling stability Low stack height midsole stabilizes foot and optimizes power transfer efficiency Integrated seamless midsole and upper construction set a new level of fit stability and lightweight performance Weight: 230g size 42 Stiffness rating: 12
