Introducing the King MT—made for runners whose idea of fun involves mud, rocks and burly mountain climbs. This shoe includes outsole lugs designed for optimal lateral breaking, medial gripping and maximum traction in wet and rocky conditions. On top of all that traction is the Altra Ego midsole, a new compound with high responsiveness at a low weight. A flexible StoneGuard rock place adds extra underfoot protection. The King MT has the most supportive upper of any Altra with TPU overlays, durable polyester ripstop fabric and a midfoot strap to lock your foot in the shoe on steep ascents and descents.