Vivobarefoot Primus Sport IV Preschool Barefoot Trainer – Unicorn
Fuss-free, breathable, and built for big adventures. The Vivobarefoot Primus Sport IV Preschool in Unicorn features a breezy recycled mesh upper, hook-and-loop fastening for easy independent on/off, and a grippy Kids Urban Play outsole for playgrounds, footpaths, and everywhere in between.
Features
- 100% recycled polyester mesh upper — breathable and vegan
- Hook-and-loop fastening for independent on/off
- Kids Urban Play outsole — sticky rubber grip for playgrounds and everyday
- No insole for enhanced ground feel and sensory feedback
- No traditional midsole for maximum flexibility
- Wide toe box for healthy foot development
- Zero-drop (0mm) for natural posture
- Unicorn colourway
Specs
- Colour: Unicorn
- Weight: Approx. 107g (EU 28)
- Drop: 0mm
- Stack height: 4mm (2mm base + 2mm lug depth)
- Upper: 100% recycled polyester mesh, vegan
- Outsole: Kids Urban Play
- Closure: Hook-and-loop (velcro)
- Best use: Everyday play, school, daycare, playgrounds, walking, running
- Fit: Preschool
- Brand: Vivobarefoot
About Vivobarefoot
Vivobarefoot designs footwear that reconnects people with natural movement. Built wide, thin, and flexible, every shoe supports healthy foot development from an early age.
Vivobarefoot Kids Size Chart
Ensure a perfect fit for growing feet with AdventureCo’s Vivobarefoot size guide for toddlers, kids, and juniors—plus tips for natural fit and return reassurance.
How to Check Fit
Vivobarefoot intentionally fits on the larger side—allowing toes to splay naturally. You’ve likely got the right size if you can easily fit a thumb between your child’s longest toe and the front of the shoe. As feet grow and toes splay, sizes may increase over time.
You can return unused shoes within 365 days for a full refund or store credit. No stress—just the right fit!
Toddler Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 12.7 | 20 | 4 | 5 |
| 13.4 | 21 | 4.5 | 5.5 |
| 14.1 | 22 | 5 | 6 |
| 14.7 | 23 | 6 | 7 |
| 15.4 | 24 | 7 | 8 |
Kids Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 16 | 25 | 8 | 9 |
| 16.7 | 26 | 8.5 | 9.5 |
| 17.4 | 27 | 9 | 10 |
| 18.1 | 28 | 10 | 11 |
| 18.7 | 29 | 11 | 11.5 |
| 19.4 | 30 | 11.5 | 12 |
| 20.1 | 31 | 12 | 13 |
| 20.7 | 32 | 13 | 1 |
Junior Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 21.3 | 33 | 1 | 2 |
| 22 | 34 | 2 | 3 |
| 22.8 | 35 | 3 | 4 |
| 23.5 | 36 | 3.5 | 4.5 |
| 24.2 | 37 | 4.5 | 5.5 |
| 24.9 | 38 | 5 | 6 |
Vivobarefoot Primus Sport IV Preschool Barefoot Trainer – Unicorn
Fuss-free, breathable, and built for big adventures. The Vivobarefoot Primus Sport IV Preschool in Unicorn features a breezy recycled mesh upper, hook-and-loop fastening for easy independent on/off, and a grippy Kids Urban Play outsole for playgrounds, footpaths, and everywhere in between.
Features
- 100% recycled polyester mesh upper — breathable and vegan
- Hook-and-loop fastening for independent on/off
- Kids Urban Play outsole — sticky rubber grip for playgrounds and everyday
- No insole for enhanced ground feel and sensory feedback
- No traditional midsole for maximum flexibility
- Wide toe box for healthy foot development
- Zero-drop (0mm) for natural posture
- Unicorn colourway
Specs
- Colour: Unicorn
- Weight: Approx. 107g (EU 28)
- Drop: 0mm
- Stack height: 4mm (2mm base + 2mm lug depth)
- Upper: 100% recycled polyester mesh, vegan
- Outsole: Kids Urban Play
- Closure: Hook-and-loop (velcro)
- Best use: Everyday play, school, daycare, playgrounds, walking, running
- Fit: Preschool
- Brand: Vivobarefoot
About Vivobarefoot
Vivobarefoot designs footwear that reconnects people with natural movement. Built wide, thin, and flexible, every shoe supports healthy foot development from an early age.
Vivobarefoot Kids Size Chart
Ensure a perfect fit for growing feet with AdventureCo’s Vivobarefoot size guide for toddlers, kids, and juniors—plus tips for natural fit and return reassurance.
How to Check Fit
Vivobarefoot intentionally fits on the larger side—allowing toes to splay naturally. You’ve likely got the right size if you can easily fit a thumb between your child’s longest toe and the front of the shoe. As feet grow and toes splay, sizes may increase over time.
You can return unused shoes within 365 days for a full refund or store credit. No stress—just the right fit!
Toddler Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 12.7 | 20 | 4 | 5 |
| 13.4 | 21 | 4.5 | 5.5 |
| 14.1 | 22 | 5 | 6 |
| 14.7 | 23 | 6 | 7 |
| 15.4 | 24 | 7 | 8 |
Kids Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 16 | 25 | 8 | 9 |
| 16.7 | 26 | 8.5 | 9.5 |
| 17.4 | 27 | 9 | 10 |
| 18.1 | 28 | 10 | 11 |
| 18.7 | 29 | 11 | 11.5 |
| 19.4 | 30 | 11.5 | 12 |
| 20.1 | 31 | 12 | 13 |
| 20.7 | 32 | 13 | 1 |
Junior Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 21.3 | 33 | 1 | 2 |
| 22 | 34 | 2 | 3 |
| 22.8 | 35 | 3 | 4 |
| 23.5 | 36 | 3.5 | 4.5 |
| 24.2 | 37 | 4.5 | 5.5 |
| 24.9 | 38 | 5 | 6 |
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.