Our best-selling barefoot training all-rounder, now re-engineered for smarter material usage and reduced production waste. The Primus Lite IV delivers the same trusted barefoot feel with recycled, vegan* materials – made for moving naturally, whether you're running or working out. Wide, thin and flexible to elevate every workout, now with a lighter footprint.
RUN, TRAIN AND MOVE LIKE NATURE INTENDED
THE BAREFOOT TRAINING ALL-ROUNDER, REFINED
PRIMUS OUTSOLE
Get as close to the ground as possible.
ORTHOLITE INSOLE
The Ortholite Performance Insole is made of 98% recycled polyurethane foam, which helps reduce waste and the use of virgin plastics.
BREATHABLE MESH
Breathable, lightweight and comfortable.
VEGAN*
*The main materials in all our Vegan* products are synthetic and aren’t derived from animals. We don’t (yet) have the transparency we need over the production of all the small components (such as adhesives and dyes) used in these products to ensure they meet vegan best practices. So, whilst we believe the shoes are vegan, we’re not yet able to guarantee it and want to be fully transparent.
WHY GO BAREFOOT
FIT
FEEL
FLEX
RECLAIM YOUR RAW POTENTIAL
WIDE, THIN, AND FLEXIBLE TO ELEVATE EVERY WORKOUT
The Primus Lite IV is a versatile performance trainer for running, workouts and dynamic day-to-day living that helps you move like nature intended. It's wide for natural stability, thin for natural feedback, and flexible for natural movement. Re-engineered with refined panels for improved manufacturing efficiency, it delivers the same true barefoot feeling with reduced production waste.
TRAINING
Barefoot performance for your best performance. Unleash your natural potential in every workout.
FIT, FEEL, FLEX
For natural stability, natural sensory feedback and natural strength.
MADE WITH RECYCLED SYNTHETIC MATERIALS, PREVENTING WASTE TO LANDFILL.
RECYCLED MATERIALS
RECYCLED MATERIALS
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.
Our best-selling barefoot training all-rounder, now re-engineered for smarter material usage and reduced production waste. The Primus Lite IV delivers the same trusted barefoot feel with recycled, vegan* materials – made for moving naturally, whether you're running or working out. Wide, thin and flexible to elevate every workout, now with a lighter footprint.
RUN, TRAIN AND MOVE LIKE NATURE INTENDED
THE BAREFOOT TRAINING ALL-ROUNDER, REFINED
PRIMUS OUTSOLE
Get as close to the ground as possible.
ORTHOLITE INSOLE
The Ortholite Performance Insole is made of 98% recycled polyurethane foam, which helps reduce waste and the use of virgin plastics.
BREATHABLE MESH
Breathable, lightweight and comfortable.
VEGAN*
*The main materials in all our Vegan* products are synthetic and aren’t derived from animals. We don’t (yet) have the transparency we need over the production of all the small components (such as adhesives and dyes) used in these products to ensure they meet vegan best practices. So, whilst we believe the shoes are vegan, we’re not yet able to guarantee it and want to be fully transparent.
WHY GO BAREFOOT
FIT
FEEL
FLEX
RECLAIM YOUR RAW POTENTIAL
WIDE, THIN, AND FLEXIBLE TO ELEVATE EVERY WORKOUT
The Primus Lite IV is a versatile performance trainer for running, workouts and dynamic day-to-day living that helps you move like nature intended. It's wide for natural stability, thin for natural feedback, and flexible for natural movement. Re-engineered with refined panels for improved manufacturing efficiency, it delivers the same true barefoot feeling with reduced production waste.
TRAINING
Barefoot performance for your best performance. Unleash your natural potential in every workout.
FIT, FEEL, FLEX
For natural stability, natural sensory feedback and natural strength.
MADE WITH RECYCLED SYNTHETIC MATERIALS, PREVENTING WASTE TO LANDFILL.
RECYCLED MATERIALS
RECYCLED MATERIALS
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.
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.