The PWR Cool insole increases comfort and regulates temperature. Temperature regulation is achieved by utilizing phase change materials that absorb, store and release heat for optimal thermal comfort. Certified Space Technology™. Full-grain leather upper, textile lining and heavy gauge thread provide long lasting quality and durability. Compression EVA FUSIONFOAM insole is 15% lighter than traditional midsole foam and provides a super comfortable fit, a more responsive ride and long lasting durability. 39 strategically placed hexagons provide multi-directional GripZone traction while 24 chevron shaped lugs increase traction where it’s needed most. Low-profile Stealth cleat made with K5 for long lasting abrasion resistance