Altra's Mont Blanc BOA is a running silhouette that's built for speed and long-distance running on the trails - where comfort meets speed. This smart design features a two-dial BOA Fit lacing system, keeping you snug and secure and allowing for precise adjustments on the go. An Altra EGO MAX foam midsole is luxuriously light, making tricky trails more comfortable than ever. Anchoring the shoe is the Vibram Litebase, which promotes a sticky grip but this time with a lighter, nimbler feeling. | AL0A7R6E0041, Textile & Synthetic Upper/Synthetic Sole.