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309089-04-M41

Vivobarefoot Primus Trail Flow Mid 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: Peyote
Peyote
Obsidian
Size: US 8 EU 41

1 item left

2025-07-09 2025-07-16 Ready Stock 現貨訂單 Pre-order 預售訂單 Gift Cards 禮品卡 Error 錯誤

Say an on-the-go hello to the new Primus Trail Flow Mid: the dynamic barefoot boot for the fast hiker in you. Our most lightweight trail profile yet is built for fast, natural trail movement – without compromising grip or feeling.

Move fast, with feeling

Lightweight fast hiking boots that go the distance

Product Info

 

TRAIL FLOW AT OUTSOLE

Lightweight grip for fast, all-terrain adventures.


NO INSOLE

No insole, bringing you even closer to the ground for a greater 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.

WATER RESISTANT

Made from materials that are water resistant and materials that are non-absorbent.

WEIGHT

Based on a single shoe in Men's size: EU 42 | UK 8 | US 9

262g

Size & Fit

This Vivo fits true to size. 

MATERIALS & TRANSPARENCY

UPPER

Ripstop texture: 95% Recycled Polyester, 5% Spandex, Collar knit: 86% Recycled Polyester, 14% Spandex

LINING

100% Recycled polyester

LACES

Round lace: 100% Recycled polyester

OUTSOLE

BR 30% + NR 20% + NBR 24% + Filler 18% + agent 8%

MADE IN VIETNAM

Care


Cleaning

Clean with a slightly damp, soapy cloth.


Drying

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


End of life

 

Ready to move on from your Vivos but they’re still in good shape? Give them a second life by reselling them through ReLoved.

 

Not looking to resell? A local thrift shop is a great option. And if they’re truly worn out—torn, shredded, or beyond repair—thank you for putting them to good use! Please drop them off at a textile recycling location near you.

Pinnacle fast-packing performance and protection

Explore with a lighter load

Stay fast on your feet, with stability and sensitivity, in the Primus Trail Flow Mid. A new hard-wearing outsole keeps you gripping and not slipping, even at speed. A breathable knit collar blocks debris, and a 90% recycled upper protects you from rain and shallow puddles. And a quick lacing system makes for easy on and off. Move fast, reconnect with nature.
Fit Feel Flex

Fit, Feel, Flex

For natural stability, natural sensory feedback and natural strength.




TRAIL FLOW AT OUTSOLE

Our lightest, most agile trail outsole yet. Built for fast hiking and trail running across varied terrain, with a new construction that maximises grip, resists abrasion and delivers lasting durability.

Sole base

1.8mm

Tread Depth

3.5mm


Embrace your human nature

The best piece of technology ever to be put in a shoe? The human foot. So let's set it free. You've got everything you need, naturally.