Altra Mont Blanc BOA Women's Trail Running Shoes Dial in your perfect fit with the Mont Blanc BOA ultimate long-distance trail running shoe. All the same Mont Blanc features you know and love, with PerformFit Wrap powered by a two-dial BOA Fit System, which allows for precise and quick adjustments when you're on the run. Tackle your toughest long-distance trail miles but keep them comfortable with Altra's Standard Footshape Fit and Altra EGO MAX midsole foam. Whether you're toeing the line at an ultramarathon or setting out on a hometown trail running adventure, the Mont Blanc BOA is ready to fly over the most rugged terrain. Lightweight, Hyper Breathable Upper Featuring strategically placed, lightweight, hyper-breathable fabrics encase your feet in providing the utmost comfort for your feet to thrive under pressure. This sensational upper works to keep feet feeling cool and comfortable, by removing excess heat and replacing it with cool, fresh air. This allows you