altra men's lone peak 4.0 mid mesh (9.5 d us) black altra your new favorite brown boot killer has been updated to be even more durable and sturdy. the lone peak 4 mid mesh features a newly revamped mesh complete with the 4-point gaitertrap to keep dirt, dust, sand and debris out as well as enhanced durability and breathability. the outsole is revamped with multi-directional lugs and decoupled trailclaws. enjoy the enhanced breathability of a mesh hiker with the same comfort and design as before, and with altra's signature footshape toe box and balanced cushioning platform you can continue to hike comfortably and balanced.