Vivobarefoot Men's Primus Trail Flow Mid II brand-OOFOS The design blends retro inspiration

The design blends retro inspiration with contemporary styling

High warmth to weight ratio

Zippered stretchy pocket keeps your phone close

Designed with comfort and energy return top-of-mind

Volume1831 in³ (30 liters)

Vivobarefoot Men's Primus Trail Flow Mid II brand-OOFOS The design blends retro inspirationMeet our lightest trail boot yet, built for agility, speed, and precision on the trail and updated for increased durability. At just 268. 5g, a low profile outsole supports natural movement, while the lug pattern delivers reliable grip. A polyester ripstop and knit upper offer flexibility, reinforced by a TPU midfoot overlay, high breathable collar, and quick lace system for secure, easy wear. Fastpack with feeling The lighter the load, the clearer