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307171-05-M42

Vivobarefoot Ultra III Bloom Mens Barefoot Shoes

Size Guide
Size Guide - Vivobarefoot

Place a piece of paper larger than your foot against the wall. Ensure that the wall is flat, and if there is any skirting, it is also flat. 

Stand on the paper with your heel against the wall. Ensure that the floor is hard and that the paper does not slide under any gap between the floor and the wall/skirting.

Mark the paper where your longest toe reaches with the pencil. Remember to not tuck the pencil under the toe as you want an accurate maximum measurement.

Measure the distance from the end of the paper to the toe line with a ruler or tape measure.

Repeat with your other foot, they might be different – trust us on this one! – and then use the longest measurement.

Use our conversion tables below to work out your recommended fit.

WOMENS FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
21.2 - 22.1 35 2.5 4.5
22.2 - 22.8 36 3 5
22.9 - 23.5 37 4 6
23.6 - 24.1 38 5 7
24.2 - 24.8 39 6 8
24.9 - 25.4  40 7 9
25.5 - 26.1 41 8 10
26.2 - 26.8 42 8.5 10.5
26.9 - 27.4 43 9 11

MENS FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
24.6 - 25.5 40 6 7
25.6 - 26.2 41 7 8
26.3 - 26.9 42 8 9
27.0 - 27.5 43 9 10
27.6 - 28.2 44 10 11
28.3 - 28.9 45 11 12
29.0 - 29.6 46 11.5 12.5
29.7 - 30.3 47 12 13
30.4 - 30.9 48 13 14
31.0 - 31.6 49 14 15
31.7 - 32.3 50 15 16
32.4 - 33.0 51 16 17

TODDLERS FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
9.4 - 10.2 18 2 3
10.3 - 10.9 19 3 4
11.0 - 11.6 20 4 5
11.7 - 12.3 21 4.5 5.5
12.4 - 13.0 22 5 6
13.1 - 13.6 23 6 7
13.7 - 14.3 24 7 8

PRESCHOOL FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
14.4 - 14.9 25 8 9
15.0 - 15.6 26 8.5 9.5
15.7 - 16.3 27 9 10
16.4 - 17.0 28 10 11
17.1 - 17.6 29 11 11.5

KIDS FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
17.7 - 18.3 30 11.5 12
18.4 - 19.0 31 12 13
19.1 - 19.6 32 13 1
19.7 - 20.2 33 1 2
20.3 - 20.9 34 2 3

JUNIOR FOOTWEAR SIZE GUIDE

FOOT LENGTH (CM) EU UK US
21.0 - 21.7 35 3 4
21.8 - 22.4 36 3.5 4.5
22.5 - 23.1 37 4.5 5.5
23.2 - 23.8 38 5 6
23.9 - 24.4 39 6 7

RECOMMENDED

SNUG

 

This shows how a shoe would fit snug. It’s still a correct fit, but with less space around and at the front of the toebox. 

RECOMMENDED

 

This is the shape of the recommended fit of Vivos. Remember, it might not be your preferred fit.

SPACIOUS

 

If you prefer a roomier fit or think you have wider-than-average feet, you might consider going a size up.

Colour: Obsidian-Grey
Obsidian-Grey
Moonstone-Grey
Size: US 9 EU 42

1 item left

2025-07-10 2025-07-17 Ready Stock 現貨訂單 Pre-order 預售訂單 Gift Cards 禮品卡 Error 錯誤
Let nature wash over you

Lightweight and regenerative amphibious shoes

Product Info

 

NO INSOLE

No insole, bringing you even closer to the ground for the full barefoot experience.

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.

WEIGHT

Based on a single shoe in Men's size: EU 38 | UK 5 | US 7.5

215g

Size & Fit

This Vivo fits true to size. 

MATERIALS & TRANSPARENCY

UPPER

Vamp, Quarter, Collar, Eyestay, Tongue (90% EVA, 10% Bloom)

Laces

Polyester, Elastane

outsole

Bloom Outsole

MADE IN CHINA

Care


Cleaning

Brush off mud and clean with a damp cloth


Drying

Dry at room tempreture. Keep out of direct sunlight and avoid putting on a radiator.


Repair Options

Laces and toggles can be replaced.


End of life

 

Once you can’t repair or don't need them anymore, send us your old Vivos and we’ll make they sure they’re given a second life, or if they’re really well-loved, we'll store them until we launch our recycling solution.

 

Send us your Vivos

Explore the shore

Built for sand, sea, rivers and rockpools

The Ultra III Bloom is for barefoot adventure-seekers who want to get fully immersed in nature. With an open-honeycomb design made using Bloom® foam (made from 10% algae biomass), these amphibious shoes let you explore in and out of the water with grip, flexibility and full barefoot feeling.
Multi Terrain

Urban

Stripped-back soles for barefoot living — so you're never too far from nature, even in the city.

Fit Feel Flex

Fit, Feel, Flex

For natural stability, natural sensory feedback and natural strength.