Perforated microfiber upper feels great on bare feet for a comfortable, easy ride. Superfeet Supercork™ premium insoles deliver dynamic comfort under the whole foot. MICROFIBER UPPER WITH TPU REINFORCEMENT, PADDED MESH HEEL, WEBBING HEEL TAB, AT LACE BUILT FROM THE INSIDE OUT SUPERFEET® SUPERCORK™ PREMIUM INSOLES DELIVER DYNAMIC COMFORT & UNRIVALED SUPPORT FOR THE FOOT & BODY. CORK + EVA BLEND SLIP-RESISTANT SYNTHETIC RUBBER (SATRA TM144:2011 CERTIFIED) CORK WEDGE + EVA WITH CORK STROBEL