Men's Lone Peak 9+ uendorphinxc Designed to be worn without

Designed to be worn without socks

which offers 30% more midsole responsiveness while reducing weight by 20%

the ACG Ultrafly Trail delivers exceptional energy return with every stride

Mesh zones for added breathability4 Degree™ elite fit system for a dialed-in

this shoe offers enhanced ventilation and a snug

Men's Lone Peak 9+ uendorphinxc Designed to be worn withoutFierce Grip. Legendary Feel. Built for bold adventures, the Altra Mens Lone Peak 9+ takes everything you love about the iconic Lone Peak and amps it up with a Vibram Megagrip outsole for unstoppable traction. Whether you're charging through technical trails, hiking peaks, or logging long miles, this rugged trail shoe keeps you grounded and moving forward. With a revised Altra EGO midsole for a more responsive, terrain connected ride and a ripstop mesh