The Pearl Izumi X-Project P.R.O. Shoe is a mountain bike shoe with a carbon sole for a stiffer ride but less resistance when you walk. Whether you prefer mountain exploring or long cyclocross days, this customizable shoe is micro-adjustable with double BOA reels. EVA foam heels add necessary comfort on days when you just can't fathom stopping. Let your feet breathe and enjoy the ride.Features of the Pearl Izumi X-Project P.R.O. Shoe Completely re-engineered carbon composite sole does what no other can: delivers uncompromising pedaling Performance and confident off-the-bike hike-ability Advanced 3-Layer Seamless Composite Upper offers exceptional breathability and eliminates hot spots by adapting to your unique foot shape Zonal Bi-directional Closure wraps the foot for a semi-custom Fit and secure foot retention Double BOA IP1 reels allow 1mm micro-adjustability and pop up for full release Co-molded carbon rubber tips on hollow TPU lugs provide impressive traction on an extremely lightweight bottom unit EVA foam heel absorbs impact for off-the-bike comfort 1:1 insole system allows independent left and right arch and forefoot varus canting adjustability for optimal pedaling mechanics