The Altra Lone Peak 9+ GTX is the one Lone Peak that pairs a GORE-TEX waterproof upper with a Vibram Megagrip outsole, making it the purpose-built choice when wet, technical terrain is the forecast rather than the exception. The zero-drop platform and Altra EGO midsole keep the natural foot position and responsive cushion the Lone Peak line is known for, while the Original FootShape last and toe-box volume deliver the fit that makes long miles on trail or thru-hike approaches feel dialed rather than compromised. What Our Gearhead(R) Experts Are Saying:"I reach for the Lone Peak 9+ GTX on any wet-season trail day where I know I'll be crossing streams or running through soaked grass. The GORE-TEX membrane keeps feet dry while the Vibram Megagrip outsole actually bites into slick roots and wet rock instead of skating across them."