Vivobarefoot | Primus Trail FG 3.5 | Men's | Obsidian

$164.99

Color
Size

Vivobarefoot · Men's · Trail running

Men's Vivobarefoot Primus Trail FG 3.5 in Obsidian

Hit the trail and reconnect with the earth in fearless style with the Primus Trail FG 3.5 — a barefoot-inspired trail runner built for adventurous souls who crave natural movement and dependable performance over diverse terrain.

All-Terrain Firm Ground Outsole

Engineered with a grippy, firm ground tread that tackles rocky paths, forest floors, and dirt tracks with confidence.

Barefoot-Inspired Feel

Thin, flexible construction lets your foot move and bend naturally — enhancing balance, coordination, and sensory feedback on every run or hike.

Breathable Mesh Upper

A lightweight, recycled polyester mesh wraps your foot in breathable comfort while helping cut back on waste.

Product details

Rugged Versatility Meets Natural Motion

Hit the trail and reconnect with the earth in fearless style with the Primus Trail FG 3.5 — a barefoot-inspired trail runner built for adventurous souls who crave natural movement and dependable performance over diverse terrain. Crafted to be both lightweight and durable, this shoe delivers the feedback, flexibility, and traction you need to explore trails near and far.

Features You’ll Love:

  • All-Terrain Firm Ground Outsole: Engineered with a grippy, firm ground tread that tackles rocky paths, forest floors, and dirt tracks with confidence.

  • Barefoot-Inspired Feel: Thin, flexible construction lets your foot move and bend naturally — enhancing balance, coordination, and sensory feedback on every run or hike.

  • Breathable Mesh Upper: A lightweight, recycled polyester mesh wraps your foot in breathable comfort while helping cut back on waste.

  • Ortholite Performance Insole: Made from 98% recycled PU foam, this cushioned footbed offers comfort with an eco-minded touch.

  • Lean, Agile Design: At approximately 281 g per shoe (size EU 42 / US 9), this trainer stays light on your feet — perfect for trail runs, hiking, and outdoor exploration.

Why It’s a Must-Have:
Perfect for men who value freedom of movement and connection to nature, the Primus Trail FG 3.5 blends barefoot performance with trail-ready durability. Whether you’re running rugged paths at sunrise or wandering scenic routes on weekends, these shoes keep every step grounded, confident, and full of natural energy.

Fit & sizing

Use the live size and width selectors on this page for current availability. Fit can vary by model, activity and sock choice; Confluence Running can help compare this Primus Trail FG 3.5 with another shoe before you order.

Quick answers

What is this model designed for?Trail running. Review the product details above for the exact materials, technologies and specifications supplied for this listing.
Which colorway is shown?This listing is the Obsidian colorway identified in the product title and images.
Need help choosing a size?Compare the available size and width options, or contact Confluence Running for fit guidance based on the shoes you already wear.
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Explore available colors and related listings, or get expert fit help from Confluence Running.

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