The original impact is the most popular and versatile shoe in mountain biking history with a stealth s1 rubber outsole the impact low is burly and durable without sacrificing stickiness or pedal contact a slingshot heel for a secure fit compression molded midsole for extra support and a stitched and reinforced toe cap for protection from the hazards of the trail make the impact low one of the most comfortable and protective shoes available its leather upper contains a mesh tongue and side p