The MX238XC furthers Lake’s commitment to creating innovative and functional products for those diehard Cyclocross, Cross Country or Gravel racers. Last: MX Competition Upper: Helcor Abrasion resistant leather and mesh with a hook lycra heel lining. The Helcor Abrasion resistant leather is specifically designed to be extremely durable against rubbing, scrapes and scuffing. The leather upper is sleek, supple and form fitting giving you a glove like feel that over time makes a perfect match to your foot like nothing else. Hook lycra heel liner offers a firm grip to your foot for those walking sections. Outsole: Lake Competition 100% Carbon Fiber Sole with Mountain Race X real rubber sole. Closure: Dual Side mounted Push/Pull IP1-S BOA® lacing system with releasable lace guides. The dual BOA®closure system offers even more adjustability than a single BOA®.