The Ultra is a lightweight, versatile men's amphibious shoe for exploring along the shore.
- The Ultra III Bloom has a honeycomb design made from 5% algae BLOOM® foam, letting you explore land and sea with grip, flexibility and full barefoot feeling
- Versatile and quick to dry, it's ideal for sailing and most other water sports
- Recommended by top surfer John John Florence for strengthening foot muscles and sensory perception, which are fundamental to injury reduction and surfing with power
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 |
The Ultra is a lightweight, versatile men's amphibious shoe for exploring along the shore.
- The Ultra III Bloom has a honeycomb design made from 5% algae BLOOM® foam, letting you explore land and sea with grip, flexibility and full barefoot feeling
- Versatile and quick to dry, it's ideal for sailing and most other water sports
- Recommended by top surfer John John Florence for strengthening foot muscles and sensory perception, which are fundamental to injury reduction and surfing with power
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 |
