The updated Altra Lone Peak 4 RSM is ready for any weather you choose to run through. As its name suggests, this member of the Altra All-Weather Series (AWS), is ready for Rain, Snow, and Mud (RSM). The upper is made of eVent; is 100% waterproof and offers market leading breathability, delivering maximum comfort and protection in the widest range of conditions. In addition, the Lone Peak 4 RSM features a reinforced toe cap, modernized mountain design on the upper and 4-Point GaiterTrap™ technology. The updated gnarly Duratread™, multi-directional outsole features accentuated TrailClaw™ for optimum grip and traction where you need it most.
Insole: 5 mm Contour Footbed
FootShape™ Toe box with Fully Cushioned Zero Drop™ Platform
Stack Height: 25 mm
Midsole: Dual Layer EVA / A-Bound™ with StoneGuard™
Outsole: MaxTrac™ Rubber with TrailClaw™
Upper: eVent® Fabrics
Weight: 10.9 oz. / 309 g
FOOTSHAPE™ TOE BOX
Allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents.
BALANCED CUSHIONING™ PLATFORM
Places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your trail run.
Hook-and-loop tab allows strapless gaiter attachment that prevents debris from building up beneath the shoe.
Canted lugs positioned strategically beneath the metatarsals to provide traction at toe off.
A perfect combination of grip, traction and durability that will eat up gnarly terrain like a boss.