Kangaroo Leather Upper: Light weight, Breathable, Form fitting. Abrasion resistant & Anti-microbial treated. Silver mesh: Breathable, Abrasion resistant & Anti-microbial. Patent Pending Thermaformable Carbon fiber heel counter. Patent Pending 100% Carbon fiber sole with thermaformable enforcement material in the arch. Patent Pending Composite fiber sole bed suspending the foot over the outer sole. Allows a more comfortable fit and for sole breathable. Outsole available for 3-hole or Speedplay for hole specific with no adaptor. Silver mesh: Breathable, Abrasion resistant, Anti-microbial. Outlast Temperature regulating heel and tongue liner: Maintains constant comfortable temperature. BOA technology closure system. Micro-adjustable closure that equalizes pressure. In combination with Lake's Patent Pending heel securing sole system the BOA closure allows the foot to be secure and comfortable without the need to over-tighten the shoe. Men's, Men's Wide, Woman's specific (M 39-48:50, 39.5-46.5 ; W 36-43, 37.5-42.5) CFC Race Last: The CFC race last is specifically shaped for optimal power transfer, putting the foot in a position that allows the energy to be focused to the pedal.