KEEN MEN'S ZIONIC ADVFeatures Quick cinch lacing Contoured Fit follows the contours of your foot for a comfortably snug fit Katalyze+ foam midsole provides a softer, more responsive ride with a 30% increase in energy return Removable, resilient foam insole for long lasting cushioning High rebound foam cushioning enhances comfort and movement ECO ANTI ODOR for natural odor control 4mm multi directional lugs for traction. Item Code: Z141031947XXXXXX69 Materials Washable