The Supersonic Collection of products was developed with one thing in mind - pure race speed. If you're looking for one package that offers maximum stiffness and minimal weight, the SCOTT MTB RC Evo is your shoe of choice. Primed for pure efficiency, it features an ultra comfortable TPU airmesh laminate upper. The dual-zone BOA® Li2 Fit System allows on-the-fly adjustability at the ankle and at the forefoot. For optimal sole support, the ErgoLogic insole features adjustable arch support and a metatarsal button.