Vivobarefoot Primus Trail 3.5 FG - Women

Do you want to feel the mountain as if you were walking barefoot?

The Primus Trail 3.5 FG gives you exactly that: freedom, grip, and connection. It’s a lightweight, flexible shoe made for those who love to feel every stone, every root, and every shift in the terrain.

The new version improves fit and breathability, with a stronger upper and a more refined structure that adapts better to the natural movement of your foot.

Everything about it is designed to offer maximum freedom without giving up the protection the mountain demands.

Built to last, made to feel

Its technical mesh combines several layers to increase durability without losing ventilation. It resists friction and trail dust while keeping your feet cool, even on tough climbs.

TPU overlays reinforce the most exposed areas, such as the toe and sides, preventing premature wear. Fewer seams mean greater comfort and less risk of rubbing.

And, as always with Vivobarefoot, the eco commitment remains strong: the sole is made from recycled rubber, and the mesh includes sustainably sourced recycled materials.

Flat, zero drop, and with real toe space. Because your feet don’t need a mold—they need to move.

Ready for anything

The Primus Trail 3.5 FG performs on hard, rocky, or mixed terrain. Its sole keeps the flexibility to feel the ground but with just enough firmness to protect you from stones and branches.

The multidirectional lugs improve uphill traction and braking on descents, both on dry and wet surfaces. The result is a stable, natural, and secure stride.

And thanks to its lightness, you move freely—no extra weight, no unnecessary cushioning.

Key features

• High flexibility for natural movement and better ground feedback.

• PRO5 puncture-resistant layer for protection without losing sensitivity.

• Fewer materials, more ground contact for a pure barefoot feel.

• Firm Ground rubber outsole with multidirectional lugs for optimal grip on hard and technical terrain.

• Removable 3 mm insole to adjust protection and comfort depending on the route.

• Quick and secure fit with round laces and toggle closure.

• Seamless, soft interior, comfortable with or without socks.

My size in the Vivobarefoot Primus Trail 3.5 FG

To find your size, it’s best to measure your foot and use the link located below the size selector.

And if you don’t get it right the first time, you will the second.

The size exchange system is simple, fast, and free if you activate the size change insurance for €1.99 (valid for Spain).

For more information about the fit, read this link.