Vivobarefoot Ultra III Women’s Obsidian Grey
The Vivobarefoot Ultra III Women’s Obsidian Grey is the ultimate amphibious barefoot shoe, built for adventure on land and in water. Combining a minimalist sole with a durable, quick-draining hex design, it offers unmatched freedom and protection wherever your journey takes you.
Key Features
- Amphibious Design: Ideal for use in wet and dry environments—perfect for beach, river, trail, and travel.
- Hex Flex Upper: Open, breathable structure made from durable, water-resistant materials for fast drainage and airflow.
- 3mm Barefoot Sole: Delivers ground feel and natural movement while offering reliable grip and protection.
- Lightweight & Packable: Ultra-light construction makes it easy to carry and perfect for minimalist travel.
- Eco-Friendly Materials: Made using algae-based Bloom® foam to reduce environmental impact.
Performance & Fit
The Ultra III fits true to size and is designed for comfort in and out of water. It offers a sock-like feel, with plenty of flexibility and room to move freely—ideal for hiking, swimming, paddleboarding, or everyday barefoot living.
Care Instructions
- Rinse with clean water after use in saltwater or muddy conditions.
- Air dry completely before storage.
- Do not machine wash or tumble dry.
Why Choose Vivobarefoot Ultra III?
The Ultra III Women’s Obsidian Grey is your go-anywhere, do-anything barefoot shoe—built for versatility, sustainability, and maximum freedom. Whether you're on the trail, in the surf, or exploring city streets, it keeps you grounded and connected to nature.
Vivobarefoot Women’s Size Chart
Ensure the perfect fit with your Vivobarefoot shoes. Our guide provides accurate size conversions (cm, EU, UK, US), the “rule of thumb” toe-room tip, and flexible 365-day returns.
Women’s Footwear Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 22.8 | 35 | 3 | 5.5 |
| 23.5 | 36 | 3.5 | 6 |
| 24.2 | 37 | 4 | 7 |
| 24.9 | 38 | 5 | 7.5 |
| 25.5 | 39 | 6 | 8 |
| 26.1 | 40 | 7 | 9 |
| 26.9 | 41 | 8 | 10 |
| 27.5 | 42 | 8.5 | 11 |
| 28.2 | 43 | 9 | 11.5 |
The "Rule of Thumb" Fit Tip
Vivobarefoot intentionally fits larger to give your toes room to wiggle—especially important for natural movement. If you can comfortably fit your thumb between your longest toe and the shoe’s front, you’ve likely found the right size. Over time, as your toes naturally splay, you may need to go up a size.
How to Measure Your Feet
- Stand with your heel against a wall on a hard surface and measure from wall to tip of your longest toe in centimeters.
- Use the “cm” column above to determine your size.
- Measure both feet and base your choice on the larger measurement.
- Measure at the end of the day when your feet are slightly larger.
Sizing Advice & Return Policy
- Vivobarefoot fits liberally—don’t size down to compensate. A bit more room means better barefoot feel.
- If you're between sizes or plan to wear thick socks, consider sizing up for lasting comfort.
- Not completely sure? You have a full 365 days to return unused shoes for a refund or store credit—stress-free returns.
Vivobarefoot Ultra III Women’s Obsidian Grey
The Vivobarefoot Ultra III Women’s Obsidian Grey is the ultimate amphibious barefoot shoe, built for adventure on land and in water. Combining a minimalist sole with a durable, quick-draining hex design, it offers unmatched freedom and protection wherever your journey takes you.
Key Features
- Amphibious Design: Ideal for use in wet and dry environments—perfect for beach, river, trail, and travel.
- Hex Flex Upper: Open, breathable structure made from durable, water-resistant materials for fast drainage and airflow.
- 3mm Barefoot Sole: Delivers ground feel and natural movement while offering reliable grip and protection.
- Lightweight & Packable: Ultra-light construction makes it easy to carry and perfect for minimalist travel.
- Eco-Friendly Materials: Made using algae-based Bloom® foam to reduce environmental impact.
Performance & Fit
The Ultra III fits true to size and is designed for comfort in and out of water. It offers a sock-like feel, with plenty of flexibility and room to move freely—ideal for hiking, swimming, paddleboarding, or everyday barefoot living.
Care Instructions
- Rinse with clean water after use in saltwater or muddy conditions.
- Air dry completely before storage.
- Do not machine wash or tumble dry.
Why Choose Vivobarefoot Ultra III?
The Ultra III Women’s Obsidian Grey is your go-anywhere, do-anything barefoot shoe—built for versatility, sustainability, and maximum freedom. Whether you're on the trail, in the surf, or exploring city streets, it keeps you grounded and connected to nature.
Vivobarefoot Women’s Size Chart
Ensure the perfect fit with your Vivobarefoot shoes. Our guide provides accurate size conversions (cm, EU, UK, US), the “rule of thumb” toe-room tip, and flexible 365-day returns.
Women’s Footwear Size Guide
| Foot Length (cm) | EU | UK | US |
|---|---|---|---|
| 22.8 | 35 | 3 | 5.5 |
| 23.5 | 36 | 3.5 | 6 |
| 24.2 | 37 | 4 | 7 |
| 24.9 | 38 | 5 | 7.5 |
| 25.5 | 39 | 6 | 8 |
| 26.1 | 40 | 7 | 9 |
| 26.9 | 41 | 8 | 10 |
| 27.5 | 42 | 8.5 | 11 |
| 28.2 | 43 | 9 | 11.5 |
The "Rule of Thumb" Fit Tip
Vivobarefoot intentionally fits larger to give your toes room to wiggle—especially important for natural movement. If you can comfortably fit your thumb between your longest toe and the shoe’s front, you’ve likely found the right size. Over time, as your toes naturally splay, you may need to go up a size.
How to Measure Your Feet
- Stand with your heel against a wall on a hard surface and measure from wall to tip of your longest toe in centimeters.
- Use the “cm” column above to determine your size.
- Measure both feet and base your choice on the larger measurement.
- Measure at the end of the day when your feet are slightly larger.
Sizing Advice & Return Policy
- Vivobarefoot fits liberally—don’t size down to compensate. A bit more room means better barefoot feel.
- If you're between sizes or plan to wear thick socks, consider sizing up for lasting comfort.
- Not completely sure? You have a full 365 days to return unused shoes for a refund or store credit—stress-free returns.
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.
