Living up to its name, the Montrail Men's Fluid Fusion Mid Hiking Boot is just that a fusion of hiking and trail running. Combining the best of both worlds, this boot is tough enough to crush muddy switchbacks, yet lightweight enough to nimbly hop over streams and fallen logs. The waterproof membrane OutDry is heat sealed to the boot's upper, which means no seams and no additional weight, guaranteeing lightness and a consistently true fit every time you strike out for the trail. Montrail's patented OutDry technology also gets rid of the need for materials that inhibit forefoot flexibility, resulting in an impermeable boot with flex that is usually only found in non waterproof boots or shoes. The Fluid Fusion provides unrivaled support and stability thanks to a cushy Fluidfoam EVA midsole that keeps you bouncing along rocky terrain and prevents your dogs from barking too early. The mid height of this boot, coupled with webbing and synthetic overlays, delivers greater control of foot and ankle torsion, as well as protection from debris along the trail. Thriving on shaky ground, the Fluid Fusion is locked and loaded with a Gryptonite outsole with multi directional lug patterns for superior traction, no matter where the trail leads you.