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Vivobarefoot Men's Primus Flow Knit sneaker in white with a breathable seamless knit upper and blue hexagon logo detail.
Black Vivobarefoot Primus Flow Knit sneaker with a breathable seamless upper, textured laces, and a thin barefoot outsole.
White Vivobarefoot Primus Flow Knit shoe showing the breathable mesh upper and textured barefoot outsole with red detailing.
Vivobarefoot Men's Primus Flow Knit in white with blue accents, featuring a breathable seamless knit upper and flat outsole.
White Vivobarefoot Primus Flow Knit sneakers with a breathable mesh upper, textured laces, and blue hexagonal logo detail.
Rear view of white and light blue Vivobarefoot Primus Flow Knit sneakers showing the unstructured heel and logo.
Vivobarefoot Primus Flow Knit men's shoe in white with a breathable mesh upper, blue honeycomb logo, and textured laces.
White Vivobarefoot Primus Flow Knit sneaker featuring a breathable seamless upper, unstructured heel, and blue textured outsole.
Vivobarefoot Men's Primus Flow Knit in black with a breathable knit upper, lace-up closure, and a thin, flexible barefoot outsole.
Black Vivobarefoot Primus Flow Knit sneaker with a breathable seamless upper, textured laces, and a thin, flexible sole.
Vivobarefoot Men's Primus Flow Knit in black with a breathable seamless upper, textured laces, and thin barefoot outsole.
Rear view of black Vivobarefoot Primus Flow Knit shoes featuring a breathable knit upper and flexible white barefoot outsole.
Black Vivobarefoot Primus Flow Knit sneaker featuring a breathable, seamless knit upper and flexible barefoot outsole.
Black Vivobarefoot Primus Flow Knit sneaker showing the textured knit upper, flexible sole, and unstructured heel design.
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Vivobarefoot Men's Primus Flow Knit

Regular price$127.97 Regular price$169.95

Color: Skyway
Size: 42

Size chart

Sizing can vary by brand and style. Use this chart as a general guide, and if you're between sizes we recommend going up half a size.

Men's

US UK EU Foot length (cm)
6 5.5 39 24
6.5 6 39 24.5
7 6.5 40 25
7.5 7 40.5 25.5
8 7.5 41 26
8.5 8 42 26.5
9 8.5 42.5 27
9.5 9 43 27.5
10 9.5 44 28
10.5 10 44.5 28.5
11 10.5 45 29
11.5 11 45.5 29.5
12 11.5 46 30
13 12.5 47.5 31
14 13.5 48.5 32

Women's

US UK EU Foot length (cm)
5 3 35.5 22
5.5 3.5 36 22.5
6 4 36.5 23
6.5 4.5 37 23.5
7 5 37.5 24
7.5 5.5 38 24.5
8 6 38.5 25
8.5 6.5 39 25.5
9 7 40 26
9.5 7.5 40.5 26.5
10 8 41 27
10.5 8.5 42 27.5
11 9 42.5 28

How to measure

Stand on a sheet of paper with your heel against a wall and mark the tip of your longest toe. Measure from the wall to the mark in centimeters, and match it to the foot length column. Measure both feet in the evening, when they're at their largest, and use the longer one.
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Clearance items are returnable for store credit only.

Description

Details

The Primus Flow Knit combines natural barefoot performance with adaptive comfort. A seamless 360° knit upper creates a breathable, lightweight, sock-like fit that flexes with your foot, while an unstructured heel window supports natural alignment. Textured laces and engineered lace loops deliver secure lockdown without restricting movement.

Primus Flow Outsole

Reconnect and run slow

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.

WEIGHT

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

MATERIALS & TRANSPARENCY

UPPER

Upper knit: 68% RPET, 7% Roica, 25% hotmelt. Upper TPU overlay: 60% Recycled TPU, 20% TPU, 20% Resin

LINING

Mesh: 100% RPET, Microfiber: 80% Recycled Polyester, 20% Polyurethane

FASTENING

Laces, 100% rPET

OUTSOLE

100% TPU, Midsole: 100% EPTU

MADE IN VIETNAM

Care

Cleaning

Brush off mud and clean with a dry cloth.

Drying

Dry at room temperature. Keep out of direct sunlight and avoid intense heat source.

Engineered to connect you with the ground and engage every muscle

Set on our ultra-light Primus Flow sole, the Primus Flow Knit keeps you close to the ground for pure sensory connection. From focused runs to everyday flow, connect to your body and move in the moment. But remember, barefoot running is a journey, not a race. To prevent injury, take it slow by first learning how to stand, walk and squat barefoot before attempting to run.
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.

Stye #: 309631-09 | 309631-06 | 309631-11

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

Why Footprint

Family-owned since 1979

A local, family-run business serving San Francisco and the Bay Area, with locations in San Francisco’s Sunset District and Colma.

Free shipping over $99

Orders ship within 24 hours, Monday to Friday. Exclusions apply.

Hassle-Free 30-Day Returns

Easy returns through our online portal, plus free exchanges. Items must be new, unworn, and in their original packaging with tags.

Earn Rewards Every Time

Earn 10 points for every $1 with The Loyalist Club, plus bonus points for reviews, photos, birthdays, and more.

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