Rough Out Leather & 1000 Denier Nylon Upper

Our rough-out, full-grain leather upper is legendary for its durability. Treated for fire resistance and approved for Safe to Fly wear. We pair it with 1000 Denier nylon for superior protection.

Spacer Mesh Lining

Ideal for hot weather conditions, this liner dispels heat vapors and allows for continuous airflow.

Speed Lace System

Our special hardware allows you to tighten from toe to top with one swift tug for a secure, tight fit.

Vibram® Rivot TFX® Outsole

Superior acceleration, braking, pivoting, and overall traction in rugged terrains with 360° pivot point lugs and strategically placed broad flat lugs. Vibram Fire and Ice material compound is incorporated to maximize extreme temperature conditions.

TERRA FORCE X platform

Provides lightweight, durable traction, heel-to-toe energy transfer, side support to enhance maneuverability, and protection from arch overwork and fatigue.

How It Fits

The 851 last is an update to our popular 850 last. This last fits true to size with an athletic and supportive fit while providing ample room in the toe. Offering a specific heel shape that locks the heel in place for better fit and comfort on the back end of the boot, this supportive fit is ideal for those needing high mileage performance from their gear.

365-Day Warranty

If you suspect your purchase isn't up to our unrelenting standards, or is defective in any way, we want to make things right. We offer a 365-day warranty across our entire footwear line.