PRIMUS TRAIL II FG MENS insole The Primus Sport IV is

The Primus Sport IV is now softer

Modern footwear inspired by ancestral wisdom

a Toe Spacer to realign and relax your toes

made using natural materials for natural movement

By enhancing foot mobility

PRIMUS TRAIL II FG MENS insole The Primus Sport IV isThe 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.