Reconnect with the trail in the Vivobarefoot Primus Trail Flow Mens – Glacial Green. Lightweight, flexible and foot-shaped, this barefoot trail shoe is built to keep you moving naturally over mixed terrain, from forest singletrack to rocky paths and urban adventures.
Natural Trail Movement
The Primus Trail Flow is designed around Vivobarefoot’s foot-shaped, zero-drop platform, encouraging a more natural stride, posture and balance. A super-flexible base lets your feet bend, splay and respond to every contour of the ground, building strength and stability with every run or hike.
Grip, Protection and Ground Feel
A lightweight ETPU midsole works with the All Terrain outsole to balance protection with barefoot sensation. A 1.8 mm base and optimised 3.5 mm lugs help you feel the trail while keeping sharp debris at bay, so you can move with confidence on wet, dry, rocky and firm ground.
Key Features
- Barefoot construction: Wide, thin and flexible for natural movement and sensory feedback.
- Foot-shaped fit: Roomy toe box so toes can spread and stabilise your stride.
- All Terrain outsole: Versatile lug pattern for grip across trails, tracks and urban surfaces.
- Lightweight ETPU midsole: Adds responsive cushioning while keeping you close to the ground.
- Breathable upper: Helps keep feet cooler and more comfortable on longer efforts.
- Minimalist, zero-drop design: Encourages a more natural foot strike and posture.
- Vegan-friendly: Made without animal-derived materials.
Specifications
- Brand: Vivobarefoot
- Model: Primus Trail Flow Mens
- Colour: Glacial Green
- Category: Men’s barefoot trail running / hiking shoe
- Outsole: All Terrain with 3.5 mm lugs on a 1.8 mm base
- Footwear type: Minimalist, zero-drop, foot-shaped design
Ideal For
Perfect for: trail running, hiking, fastpacking and everyday outdoor adventures where you want more connection to the ground and a natural feel underfoot.
Care & Maintenance
- Brush off dirt after each outing.
- Wipe with a damp cloth and mild soap if needed.
- Air dry away from direct heat sources.
- Do not machine wash or tumble dry.
- If you’re new to barefoot footwear, build up wear time gradually to let your feet adapt.
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.
Reconnect with the trail in the Vivobarefoot Primus Trail Flow Mens – Glacial Green. Lightweight, flexible and foot-shaped, this barefoot trail shoe is built to keep you moving naturally over mixed terrain, from forest singletrack to rocky paths and urban adventures.
Natural Trail Movement
The Primus Trail Flow is designed around Vivobarefoot’s foot-shaped, zero-drop platform, encouraging a more natural stride, posture and balance. A super-flexible base lets your feet bend, splay and respond to every contour of the ground, building strength and stability with every run or hike.
Grip, Protection and Ground Feel
A lightweight ETPU midsole works with the All Terrain outsole to balance protection with barefoot sensation. A 1.8 mm base and optimised 3.5 mm lugs help you feel the trail while keeping sharp debris at bay, so you can move with confidence on wet, dry, rocky and firm ground.
Key Features
- Barefoot construction: Wide, thin and flexible for natural movement and sensory feedback.
- Foot-shaped fit: Roomy toe box so toes can spread and stabilise your stride.
- All Terrain outsole: Versatile lug pattern for grip across trails, tracks and urban surfaces.
- Lightweight ETPU midsole: Adds responsive cushioning while keeping you close to the ground.
- Breathable upper: Helps keep feet cooler and more comfortable on longer efforts.
- Minimalist, zero-drop design: Encourages a more natural foot strike and posture.
- Vegan-friendly: Made without animal-derived materials.
Specifications
- Brand: Vivobarefoot
- Model: Primus Trail Flow Mens
- Colour: Glacial Green
- Category: Men’s barefoot trail running / hiking shoe
- Outsole: All Terrain with 3.5 mm lugs on a 1.8 mm base
- Footwear type: Minimalist, zero-drop, foot-shaped design
Ideal For
Perfect for: trail running, hiking, fastpacking and everyday outdoor adventures where you want more connection to the ground and a natural feel underfoot.
Care & Maintenance
- Brush off dirt after each outing.
- Wipe with a damp cloth and mild soap if needed.
- Air dry away from direct heat sources.
- Do not machine wash or tumble dry.
- If you’re new to barefoot footwear, build up wear time gradually to let your feet adapt.
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.
WHY GO BAREFOOT
Wearing Vivos for 6 months increases foot strength by 60%
Better Balance and Posture
Foot-shaped fit enables toes to splay supporting balance and a stable base of support.
Improved Coordination And Agility
Thin sole allows the thousands of nerve endings in each foot enabling the sensory feedback the brain needs to move with skill.
Improved Strength and Natural Movement
Flexible footwear let the muscles and tendons load and recoil, supporting stronger, more resilient feet over time.
15,000+ 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 15,000 orders delivered. Shop with confidence, the adventure is guaranteed.