PRIMUS TRAIL II FG MENS insole with protection and stability that

with protection and stability that doesn't sacrifice barefoot feel

By enhancing foot mobility

calisthenics and bodyweight training

providing unparalleled barefoot feeling and flexibility for calisthenics

PRIMUS TRAIL II FG MENS insole with protection and stability thatThe Primus Trail II Firm Ground is our original, best selling trail running sneaker. It's light, durable and flexible for wide ranging trail adventures that bring you closer to the earth. Continuously improved through athlete testing and material innovation, the Primus Trail II FG has nothing more or less than exactly what you need made with high performance, recycled, vegan* materials.