This fully waterproof hiking shoe is ready for the most extreme adventures! The Xcursion Fusion is a sleeker and more rugged version of the best-selling original. Featuring a new 10 mm FeelTrue sole, a rugged Dual Chevron tread with 3.5 mm profile and an embedded TrailFoam layer for added comfort and protection, the new Xcursion Fusion is designed to provide even more grip and control without sacrificing the ground feel and feedback you expect from Xero Shoes.