Two layers of durable Aerolyte comfort foam help your feet relax inside your shoes & provides extra protection on rough terrainResponsive forefoot zone blends cushioning & rebound to add a spring to every stepAdaptive Comfort Technology - patented design flexes with you, adapting your footwear to the way your feet moveEnergizing heel cushion disperses impact & reduces vibration to minimize fatigueMoisturewick for improved wicking and breathability, plus odor control