Speed speed and more speedthese overshoes are all about speed every little aerodynamic gain you can get to reduce drag helps maximise your power output and speed covering the shoes with these raceaero overshoes helps smooth the airflow around your shoes gaining you precious savings in time and effort as a secondary aspect they will also help protect your shoes against road dirt and grime but their primary purpose is maximising aerodynamics when it comes to going as fast as possible ever