Fast, rugged and ready for whatever wild comes your way, the updated ACG Mountain Fly 2 is here to take you to the top. Don't worry about pushing your hardest eitherthe breathable upper helps keep you from overheating, while letting you air out quickly when wet. For extra comfort and support, there's a foam midsole and lightweight plate that runs from the ball of your foot to the heel. Of course, you're gonna get dirty out therethat's just part of the funbut our crag-ready traction (inspired by mountain biking tires) is redesigned to help improve durability and keep you upright and enjoying the adventure.