Vivobarefoot Primus Lite Knit - Obsidian Men's
Brand: Vivobarefoot
The Primus Lite Knit is Vivobarefoot's ultralight, breathable everyday trainer for men. A sock-like knit upper made from recycled polyester wraps the foot, while the 4mm flexible sole keeps you connected to the ground beneath you. It's built for men who want natural toe splay and real ground-feel without giving up everyday comfort.
Key features
- Zero-drop sole for natural posture and alignment
- 4mm thin, flexible sole for maximum ground-feel and proprioception
- Wide toe box allowing natural toe splay for better balance
- Recycled polyester knit upper for breathability and a sock-like fit
- Ultralight construction for all-day wear
- Removable OrthoLite insole (98% recycled PU foam)
- Puncture-resistant rubber outsole with natural rubber content
- B-Corp certified brand with ReVivo repair and recycle programme
Why barefoot?
Conventional shoes cushion and restrict. Barefoot shoes do the opposite: thin soles let your feet sense the ground, a wide toe box lets toes spread naturally, and a zero-drop sole keeps your posture aligned. Over time, this builds stronger feet and better body awareness. The Primus Lite Knit makes that transition easy with a comfortable, breathable knit that feels familiar from the first wear.
Specifications
| Sole | 4mm Active Sole (zero drop) |
|---|---|
| Upper | Recycled polyester knit (approximately 85% RPET, 15% Elastane) |
| Lining | Textile / microfibre collar |
| Insole | Removable OrthoLite (98% recycled PU) |
| Outsole | Rubber compound (natural + synthetic rubber) |
| Colour | Obsidian (Black) |
| Fit | Men's, wide toe box |
| Sizes | EU 40-48 (approximately UK 6-13) |
Sizing & Fit
Size range: EU 40-48 (approximately UK 6-13)
Vivobarefoot sizing generally runs true to size. The Primus Lite Knit has a sock-like fit that hugs the foot. If between sizes, size up for comfort room.
Powered by the BarefootBrit Fit System™ - we recommend allowing 8-12mm comfort room from your longest toe to the end of the insole. Not sure of your measurements? See our foot measuring guide for step-by-step instructions.
Materials & Care
- Upper: Recycled polyester knit (approximately 85% RPET, 15% Elastane) with welded TPU reinforcements
- Insole: Removable OrthoLite Performance (98% recycled PU foam)
- Outsole: Puncture-resistant rubber (approximately 30% natural rubber, bio-silica fillers)
- Laces: 100% recycled polyester with plastic-free aglets
Brush off loose dirt. Hand wash with lukewarm water and mild soap. Air dry at room temperature (stuff with newspaper to speed up). Do not machine wash, tumble dry, or place on radiators. Sprinkle baking soda overnight for odour control.
About the Brand
Vivobarefoot was founded in 2012 by Galahad and Asher Clark, seventh-generation cobblers from the British Clarks shoemaking dynasty.
Their philosophy is built on three principles: WIDE (natural toe splay), THIN (maximum sensory feedback), and FLEXIBLE (natural foot strength).
Vivobarefoot is a certified B-Corporation, meeting rigorous social and environmental standards. Their ReVivo programme lets customers return worn shoes to be repaired, resold, or recycled, keeping footwear out of landfills. The VivoHealth educational platform reconnects people with natural movement.
Product Specifications
- Zero Drop: Yes
- Toe Box Shape: Foot-shaped
- Flexibility: Medium
- Sole Thickness: 5.0mm
- Water Resistance: None
- Vegan: Yes
- Removable Insole: Yes
Vivobarefoot Primus Lite Knit - Obsidian Men's
Description
The Primus Lite Knit is Vivobarefoot's ultralight, breathable everyday trainer for men. A sock-like knit upper made from recycled polyester wraps the foot, while the 4mm flexible sole keeps you connected to the ground beneath you. It's built for men who want natural toe splay and real ground-feel without giving up everyday comfort.
Key features
- Zero-drop sole for natural posture and alignment
- 4mm thin, flexible sole for maximum ground-feel and proprioception
- Wide toe box allowing natural toe splay for better balance
- Recycled polyester knit upper for breathability and a sock-like fit
- Ultralight construction for all-day wear
- Removable OrthoLite insole (98% recycled PU foam)
- Puncture-resistant rubber outsole with natural rubber content
- B-Corp certified brand with ReVivo repair and recycle programme
Why barefoot?
Conventional shoes cushion and restrict. Barefoot shoes do the opposite: thin soles let your feet sense the ground, a wide toe box lets toes spread naturally, and a zero-drop sole keeps your posture aligned. Over time, this builds stronger feet and better body awareness. The Primus Lite Knit makes that transition easy with a comfortable, breathable knit that feels familiar from the first wear.
Specifications
| Sole | 4mm Active Sole (zero drop) |
|---|---|
| Upper | Recycled polyester knit (approximately 85% RPET, 15% Elastane) |
| Lining | Textile / microfibre collar |
| Insole | Removable OrthoLite (98% recycled PU) |
| Outsole | Rubber compound (natural + synthetic rubber) |
| Colour | Obsidian (Black) |
| Fit | Men's, wide toe box |
| Sizes | EU 40-48 (approximately UK 6-13) |
Sizing & Fit
Size range: EU 40-48 (approximately UK 6-13)
Vivobarefoot sizing generally runs true to size. The Primus Lite Knit has a sock-like fit that hugs the foot. If between sizes, size up for comfort room.
Powered by the BarefootBrit Fit System™ - we recommend allowing 8-12mm comfort room from your longest toe to the end of the insole. Not sure of your measurements? See our foot measuring guide for step-by-step instructions.
Materials & Care
- Upper: Recycled polyester knit (approximately 85% RPET, 15% Elastane) with welded TPU reinforcements
- Insole: Removable OrthoLite Performance (98% recycled PU foam)
- Outsole: Puncture-resistant rubber (approximately 30% natural rubber, bio-silica fillers)
- Laces: 100% recycled polyester with plastic-free aglets
Brush off loose dirt. Hand wash with lukewarm water and mild soap. Air dry at room temperature (stuff with newspaper to speed up). Do not machine wash, tumble dry, or place on radiators. Sprinkle baking soda overnight for odour control.
About the Brand
Vivobarefoot was founded in 2012 by Galahad and Asher Clark, seventh-generation cobblers from the British Clarks shoemaking dynasty.
Their philosophy is built on three principles: WIDE (natural toe splay), THIN (maximum sensory feedback), and FLEXIBLE (natural foot strength).
Vivobarefoot is a certified B-Corporation, meeting rigorous social and environmental standards. Their ReVivo programme lets customers return worn shoes to be repaired, resold, or recycled, keeping footwear out of landfills. The VivoHealth educational platform reconnects people with natural movement.
Shipping & Returns
Free UK delivery on orders over £130. Standard delivery 1-3 working days. Same-day dispatch on orders placed before 12 PM Mon-Sat.
Returns accepted within 30 days — items must be unworn and in original packaging. Visit our Shipping and Returns page for full details.
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Not Sure of Your Size? Start Here
Barefoot shoe sizing works differently from standard high-street brands. Measuring your feet in centimetres is the essential first step to getting the right fit.
The Wall & Paper Method
A simple 5-step process you can do at home with just a piece of paper, a pencil, and a ruler.
Room to Move
Adults need 0.8–1.2cm of space; kids need 0.8–1.5cm of growing room beyond their foot length.
Width Matters
Barefoot shoes have wide toe boxes, but width fitting is just as important as length for comfort.
Customer Reviews
Fast delivery
My daughter loves them
Perfect
Super comfortable, I have sensory issues and socks have long been a struggle - I plan to switch over to these completely
Lovely socks… I’m now a total convert to toe socks, they are so comfortable! These are great for summer in trainers, breathable and just the right height. I’m about to buy more.
Helpful friendly and easy
Great socks, comfortable and not restrictive on the toes.
So comfortable,I need more!
Great customer service and so friendly. If you have a problem they are quick to sort it out with ease. Amazing people. Love you all. Thanks for bringing this shop to life. Dan is amazing.
They are great quality and so comfy. My daughter HATES mainstream socks because of the bar across the toe section but absolutely LOVES these. Thank you so much.
Great socks, very comfy. Just need more variety instead of basic black or white
Easy to use. Delivery was good too
I love these socks. Just need them in lots of different colours / patterns next ❤️
The most comfortable socks ever, if you fancy a day off from your toe socks or just fancy less hobbit-like looking feet - these are a game changer!
They are fantastic!
