This revamp of Busenitz's legendary vulc shoe retains the same classic silhouette, but is packed full of updated performance features. The outsole has been updated to the team-favorite GeoFlex tread to give the shoe flexibility, and lasting grip in all directions. The abrasion resistant one piece upper is reinforced with an AdiTUFF underlay to extend the life of the shoe even after breaking through the upper. Inside the shoe is an AdiPRENE sock liner for comfort and impact absorption, and the collar has the beloved GeoFit® lining to make these extra comfy all day long.