Vivobarefoot Primus Trail FG 3.5 Men – Insignia Blue
The Vivobarefoot Primus Trail FG 3.5 Men’s shoe in Insignia Blue delivers a barefoot trail running experience with exceptional grip and flexibility. Designed for rugged terrain, it supports natural foot movement while providing reliable traction and comfort.
Key Features
- Flexible Ground (FG) outsole: Aggressive tread for excellent grip on varied trails
- Lightweight design: Allows unrestricted foot movement and responsiveness
- Breathable upper: Keeps feet cool and dry during long runs
- Minimal cushioning: Protects while maintaining a barefoot feel
- Durable materials: Built to withstand trail challenges
Ideal For
- Trail running and off-road adventures
- Minimalist runners seeking natural foot mechanics
- Outdoor enthusiasts requiring grip and flexibility
Sizing and Fit
Available in EU sizes 40–48. Fits true to size with a roomy toe box to allow natural toe splay.
Care Instructions
- Wipe clean with a damp cloth
- Air dry away from direct sunlight and heat sources
- Do not machine wash or tumble dry
Why Choose the Primus Trail FG 3.5
This shoe offers a perfect balance of barefoot freedom, trail-ready grip, and durability for runners and hikers who want to stay connected to the ground while conquering rugged terrain.
Vivobarefoot Men’s Size Chart
Ensure your Vivobarefoot shoes fit just right. Our guide includes accurate size conversions (cm, EU, UK, US), the “rule of thumb” for toe-splay, and easy 365-day returns.
Men’s Footwear Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 26.2 | 40 | 6 | 7 |
| 26.9 | 41 | 7 | 8 |
| 27.6 | 42 | 8 | 9 |
| 28.2 | 43 | 9 | 10 |
| 28.9 | 44 | 10 | 11 |
| 29.5 | 45 | 11 | 12 |
| 30.2 | 46 | 11.5 | 12.5 |
| 30.9 | 47 | 12 | 13 |
| 31.5 | 48 | 13 | 14 |
| 32.2 | 49 | 14 | 15 |
The Rule of Thumb
Vivobarefoot deliberately fits larger—your toes need room to splay naturally. If you can fit your thumb between your longest toe and the shoe’s front, you're likely wearing the right size. Over time, as toes spread, you may need to move up a size.
How to Measure Your Feet
- Stand on a hard surface with your heel against a wall.
- Mark the tip of your longest toe and measure to the wall in cm.
- Use the measurement above to choose the corresponding EU/UK/US size.
- Measure both feet and use the longer measurement.
Sizing Tips & Returns
- Vivobarefoot shoes run larger than traditional footwear—don’t worry, this supports natural toe splay.
- If you’re between sizes, we recommend sizing up for comfort rather than over-tight fit.
- Changed your mind? Return unused shoes within 365 days for a full refund or store credit—no questions asked.
Vivobarefoot Primus Trail FG 3.5 Men – Insignia Blue
The Vivobarefoot Primus Trail FG 3.5 Men’s shoe in Insignia Blue delivers a barefoot trail running experience with exceptional grip and flexibility. Designed for rugged terrain, it supports natural foot movement while providing reliable traction and comfort.
Key Features
- Flexible Ground (FG) outsole: Aggressive tread for excellent grip on varied trails
- Lightweight design: Allows unrestricted foot movement and responsiveness
- Breathable upper: Keeps feet cool and dry during long runs
- Minimal cushioning: Protects while maintaining a barefoot feel
- Durable materials: Built to withstand trail challenges
Ideal For
- Trail running and off-road adventures
- Minimalist runners seeking natural foot mechanics
- Outdoor enthusiasts requiring grip and flexibility
Sizing and Fit
Available in EU sizes 40–48. Fits true to size with a roomy toe box to allow natural toe splay.
Care Instructions
- Wipe clean with a damp cloth
- Air dry away from direct sunlight and heat sources
- Do not machine wash or tumble dry
Why Choose the Primus Trail FG 3.5
This shoe offers a perfect balance of barefoot freedom, trail-ready grip, and durability for runners and hikers who want to stay connected to the ground while conquering rugged terrain.
Vivobarefoot Men’s Size Chart
Ensure your Vivobarefoot shoes fit just right. Our guide includes accurate size conversions (cm, EU, UK, US), the “rule of thumb” for toe-splay, and easy 365-day returns.
Men’s Footwear Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 26.2 | 40 | 6 | 7 |
| 26.9 | 41 | 7 | 8 |
| 27.6 | 42 | 8 | 9 |
| 28.2 | 43 | 9 | 10 |
| 28.9 | 44 | 10 | 11 |
| 29.5 | 45 | 11 | 12 |
| 30.2 | 46 | 11.5 | 12.5 |
| 30.9 | 47 | 12 | 13 |
| 31.5 | 48 | 13 | 14 |
| 32.2 | 49 | 14 | 15 |
The Rule of Thumb
Vivobarefoot deliberately fits larger—your toes need room to splay naturally. If you can fit your thumb between your longest toe and the shoe’s front, you're likely wearing the right size. Over time, as toes spread, you may need to move up a size.
How to Measure Your Feet
- Stand on a hard surface with your heel against a wall.
- Mark the tip of your longest toe and measure to the wall in cm.
- Use the measurement above to choose the corresponding EU/UK/US size.
- Measure both feet and use the longer measurement.
Sizing Tips & Returns
- Vivobarefoot shoes run larger than traditional footwear—don’t worry, this supports natural toe splay.
- If you’re between sizes, we recommend sizing up for comfort rather than over-tight fit.
- Changed your mind? Return unused shoes within 365 days for a full refund or store credit—no questions asked.
10,000+ Reasons to Give Us a Try
At Adventureco, we stand behind every product we sell. That’s why you’re covered by our 365-Day Return Policy — with free returns within Australia.
Not the right fit? Changed your mind? No worries. Return your gear in unused condition within 365 days for a full refund or store credit — no fuss, no pressure.
Trusted for 9+ years and over 10,000 orders delivered. Shop with confidence, the adventure is guaranteed.
