Lightweight high-performance road shoes with unparalleled power transfer benefitting from S-PHYRE trickle-down technology. Upgraded upper pattern and material improves fit and breathability while reducing weight Surround wrapping upper structure reduces overlap providing a glove-like fit and eliminating hot-spots Super low stack height helps stabilize foot maximizes power transfer and efficiency Integrated sole and upper construction sets a new level of fit stability rigidity and lightweight performance Mesh/TPU/Synthetic leather composite upper provides comfortable fit and better breathability Light carbon fibre reinforced nylon sole for power transfer BOA® L6 skeleton dials ensure precise fit and comfort Weight: 240g size 42 Stiffness rating: 7