DESIGN: Seamless perforated synthetic upper for improved breathability and comfort TPU lugs deliver off the bike confidence 2-bolt SPD cleat compatible IN-SHOE COMFORT: Reinforced toe bumper for added durability and protection L6 Boa system with sequence routing for micro-adjustability and secure, even closure Extra toe protection helps with errant stones and any extended or uphill hikes EVA insert at the heel provides noticeable vibration damping DURABILITY AND TRACTION: 1:1 Next Step Nylon composite sole does what no other can: deliver uncompromising pedaling performance and confident off-the-bike hike-ability