Keen Women's Hightrail Mid WPContoured Fit follows the contours of your foot for a comfortably snug fit Foam strobel board underfoot for an extra layer of cushioning High rebound foam cushioning enhances comfort and movement Removable, resilient foam insole for long lasting cushioning KEEN. ALL TERRAIN rubber outsole for higher traction grip Multi directional lug pattern provides superior traction KEEN. DRY waterproof, breathable membrane seals out moisture from the inside