Vivobarefoot Primus Trail Flow – Men’s Dark Shadow
Conquer trails with the Primus Trail Flow in Dark Shadow—a barefoot-inspired trail runner combining natural ground feel with durable, eco-conscious design.
Breathable, Sustainable Upper
- 100% recycled polyester mesh provides durability and airflow for active trails.
- Engineered anti-slip lacing ensures a secure fit, even on technical terrain.
Ground-Engaging Outsole
- All-Terrain outsole delivers precise grip with a flexible, ultra-thin platform (1.8 mm sole, 3.5 mm lug depth).
- No insole—as thin as you can get while still offering protection—maximizes barefoot connection.
Barefoot-Driven Design
- Zero-drop layout and minimalist construction encourage natural stride and sensory feedback.
- Streamlined silhouette ideal for fast hiking or mindful trail runs.
Get the Right Fit the First Time
We want to make sure you pick the perfect size when ordering online. That’s why we’ve created clear, easy-to-use size charts for every Vivobarefoot product.
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.
Our Size Guide is here to help! Vivobarefoot fit 'big' deliberately – we call this ‘the rule of thumb’. Your toes need wiggle room! This is especially important for running. If you can fit your thumb in-between the end of your toe and the front of the shoe, you’ve more than likely found your ideal size.
**After some time with Vivobarefoot shoes, your shoe size may need to increase, as your toes splay out more naturally.**
MENS FOOTWEAR SIZE GUIDE
| 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 |
Vivobarefoot Primus Trail Flow – Men’s Dark Shadow
Conquer trails with the Primus Trail Flow in Dark Shadow—a barefoot-inspired trail runner combining natural ground feel with durable, eco-conscious design.
Breathable, Sustainable Upper
- 100% recycled polyester mesh provides durability and airflow for active trails.
- Engineered anti-slip lacing ensures a secure fit, even on technical terrain.
Ground-Engaging Outsole
- All-Terrain outsole delivers precise grip with a flexible, ultra-thin platform (1.8 mm sole, 3.5 mm lug depth).
- No insole—as thin as you can get while still offering protection—maximizes barefoot connection.
Barefoot-Driven Design
- Zero-drop layout and minimalist construction encourage natural stride and sensory feedback.
- Streamlined silhouette ideal for fast hiking or mindful trail runs.
Get the Right Fit the First Time
We want to make sure you pick the perfect size when ordering online. That’s why we’ve created clear, easy-to-use size charts for every Vivobarefoot product.
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.
Our Size Guide is here to help! Vivobarefoot fit 'big' deliberately – we call this ‘the rule of thumb’. Your toes need wiggle room! This is especially important for running. If you can fit your thumb in-between the end of your toe and the front of the shoe, you’ve more than likely found your ideal size.
**After some time with Vivobarefoot shoes, your shoe size may need to increase, as your toes splay out more naturally.**
MENS FOOTWEAR SIZE GUIDE
| 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 |
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.
