Completely neutral drop for the most natural running experience; FKT insole with a closed cell beaded foam keeps water out, allowing shoes to drain quickly in wet conditions; Vibram Megagrip outsole features 4mm lugs for excellent traction and grip; Gaiter Compatible for additional protection from dirt, rocks, and twigs on the trails (sold separately); Best for Trail Running, Hiking; Heel to Toe Drop: 0mm; Stack Height: 28mm (0-drop); Weight: 8.6 oz (W7)