Altra Lone Peak 9+ GTX Review: Ready for the Rough Stuff 。Only worn one time. Tread in perfect condition. Original box and packaging. It’s got a seriously grippy Vibram® outsole with a waterproof GORE-TEX upper, so you can tackle legendary adventures no matter the forecast. The lightweight, breathable, and waterproof performance of a GORE-TEX Invisible Fit upper combines with soft rolled mesh for comfort and durability. A Vibram® Megagrip outsole gives you confident traction on wet or dry surfaces with rugged longevity. Feel a slightly cushioned connection to the ground with an Altra EGO™ midsole. A shortened toe cap ensures you’ve got protection and flexibility with every move, whether you’re hiking or trail running. The Lone Peak 9+ GTX also features Altra’s roomiest toe box with plenty of room to help your toes move more freely and space through the midfoot. It’s waterproof, grippy, comfortable, and ready to tackle legendary trails.