Dec 5-12 Winter Clearance

Dec 5-12 Winter Clearance

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309460-01-M42

Vivobarefoot Hydra ESC Mens Barefoot Shoes

Dec 5-12 Winter Clearance (Red Discount %)Login Required
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
Obsidian
Storm Cloud
Size: US 9 EU 42

1 item left

2025-12-06 2025-12-13 Ready Stock 現貨訂單 Pre-order 預售訂單 Gift Cards 禮品卡 Error 錯誤
The Hydra ESC is our pinnacle swimrun and trail trainer, built to thrive in the aquatic biome in harmony with nature. It’s a pioneering take on amphibious barefootwear, created alongside elite athletes to glide underwater, grip on land, and drain and dry quickly.

Flow through the natural world

Revolutionary, high-performance swimrun trainers

Product Info

 

SWIMRUN ESC MICHELIN© OUTSOLE

The high-vis Michelin© sole for all-terrain traction.


BLOOM® FOAM INSOLE 

The Bloom® Foam insole is made using the sustainable alternative to synthetic and petrochemical EVA foam, derived from algae biomass. This algae can damage our oceans, so harnessing it in our footwear helps clean up the environment.

BREATHABLE MESH

Breathable, lightweight and comfortable.

RAPID DRAIN AND DRY

Mesh construction provides efficient drainage and keeps out sediment and debris, while water resistant materials ensure the boot doesn't absorb water, keeping them light and comfortable. 

TOUGH RUBBER COMPOUND

Strong, non-marking rubber compound for sticky grip and high-abrasion when you need it most.

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 42 | UK 8 | US 9

350g

Size & Fit

This Vivo fits true to size. 

MATERIALS & TRANSPARENCY

UPPER

Vamp (100% RPET), Overlay (20% Bio Corn KPU, 80% Polyurethane), Collar Knit (RPET 75%, Elastane 21%, Nylon Hotmelt 4%), Eyestay TPU (80% Polyurethane 20% Resin)

lining

Lining Microfibre (40% Polyester, 60% Polyurethane + Hotmelt)

Hardware

Toggle Polycarbonate, Lace End TPU

Laces

100% RPET

insole

Bloom, Blind Insole (100% RPET), Turned Insole Backer (100% RPET)

outsole

Swim Run ESC Michelin Outsole (52% Synthetic Rubber, 48% Additives)

MADE IN VIETNAM

Care

Cleaning

Brush off mud and clean with a damp cloth


Drying

Remove insole and dry at room tempreture. Keep out of direct sunlight and avoid putting on a radiator.


Repair Options

Laces and insoles 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.

Swim and run wild

Built for amphibious adventure

The Hydra ESC is for wild runners, swimmers, and swimrunners seeking a deep connection with the aquatic biome. It’s part of our Ecological Survival Collection.

 

The materials drain and dry rapidly and stay light when wet. Hydrodynamic, quick-lock lacing allows easy on-the-move adjustments. A RISE foam insole, made with excess algae biomass choking up waterways, glides through water. And the Michelin© ESC sole grips even the slickest, most technical trails. Pinnacle swimrun footwear, pinnacle trail-running footwear.

Multi Terrain

Off-trail extreme

Extremely good grip and traction for extreme terrains, still with plenty of barefoot feeling to connect to nature.

Multi Terrain

multi-terrain

Giving you grip and ground feel on everything from wet and dry, rocky and firm terrain.

Fit Feel Flex

Fit, Feel, Flex

For natural stability, natural sensory feedback and natural strength.

Image Media

SWIMRUN ESC MICHELIN© OUTSOLE

The Swimrun ESC Michelin© outsole is engineered from sticky, durable rubber to give you great support, grip and peace of mind over tough terrains (including slippery ones). The 4mm multi-directional lugs let you brake and change direction with control, making it ideal for any type of swimrun adventure.

Sole base

2mm

Tread Depth

4mm


Welcome back the wild.

Human beings aren’t separate to nature, we are nature. When we listen to it's rhythm and connect to its intelligence, we thrive. It's time to get outside and rewild.