As part of the Altra All-Weather Series (AWS) the RSM (rain, snow, mud) Lone Peak 4 Mid is made to face the elements. It features a brand new eVent® upper, a crazy breathable, 100% waterproof material. With billions of tiny pores in the material means it breathes in any condition, wet or dry, while still letting sweat escape. This fabric is the leader in breathable, waterproof technology available on the market. The upper takes on a new look with an updated mountain design, while the updated outsole features multi-directional lugs.
FootShape™ Toe Box
FOOTSHAPE TOE BOX
Allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents.
Zero Drop™ Platform
ZERO DROP PLATFORM
Places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your trail run.