Technically Improved From The Inside, Out. As On'S Flagship Hiking Boot, The Cloudrock 2 Waterproof Has A New Precision Hiking Fit With A Missiongrip™ Rubber Sole For Better Control And Traction, In Any Conditions. For Hikers And Outdoor Explorers Everywhere, Updated Cloud Elements, Added Heel Stability And A Reinforced Collar Give A More Secure Fit And Comfortable Ride From Sun Up To Sun Down. While Underfoot, The Closed Midsole Channel Means You Can Leave The Trail, On The Trail.