MX Competition Last – Featuring a larger toe box & tighter heel than the Comfort last and with slightly more overall volume than the Sport last. Exceptionally secure for hard riding/racing with enough room in the toe box to prevent binding when running up inclines or negotiating a hike-a-bike section. Designed for performance riding & racing.Construction:OUTSOLE - Lake Competition 100% Carbon Fiber Sole with Mountain Race X real rubber sole,UPPER - Fullgrain Water Resistant Premium Leather with mesh upper, Aramid and Helcor Abrasion resistant leather panels with Outlast and hook lycra heel lining. The Helcor Abrasion resistant leather is specifically designed to be extremely durable against rubbing, scrapes and scuffing. Hook lycra heel liner offers a firm grip to your foot for those walking sections.,CLOSURE - Dual Side mounted Push/Pull BOA IP1-S lacing system with releasable lace guides.