Pearl Izumi Men's X-Project 1.0 Cycling Shoe 100% Synthetic Imported Synthetic sole Seamless 9mm second skin upper: the thinnest upper on the market, it adapts comfortably to your unique foot shape to eliminate hot spots and offers superior breathability Power web: a non-stretch web that easily conforms to your foot, but keeps you bolted to the pedal. Seamless construction in the toe area for no-seam comfort in the flex zone Bi-Directional closure: delivers a semi-custom fit by gathering equally from both sides for even foot retention, with the precision of a micro-adjustable BOA reel Run shoe ethylene vinyl acetate foam heel absorbs impact for off-the-bike comfort. Full-length tapered carbon fiber plate (patent-pending) gives on-the bike power transfer and off-the-bike hike-ability Co-Molded rubber tips on hollow tpu lugs provide traction on an extremely lightweight bottom unit