100 day trial available

Primus Trail SG Mens


Primus Trail SG is an unswerving favourite with our team of off-road competitive athletes. Designed for picking up the pace when hitting the trails, the high-profile lugs give superior grip on muddy and loose ground. This water-wicking barefoot shoe is quick draining and breathable, with a lightweight stretchy ankle collar for unrestrained mobility whilst keeping out any little nasties kicked up on the trail. If you’re splashing through rivers and navigating tricky terrains, Primus SG is the shoe for you.

1. Select Colour: Black/Red
2. Select EU Size:
3. Optional Extras:

A selection of laces, insoles and apparel to pair with your Vivo's

This shoe fits true to size

Select size to show stock
100 day trial for barefoot beginners

We're confident that after 100 days of au natural foot freedom (you need to give them a proper outing) your feet will love being feet. So we're happy to give you a no-quibbles test run for 100 days.

All major credit cards accepted.

Primus SG is geared for technical off-road trails.

We’ve focused on providing a quick-dry design with superior grip, whilst honouring the concept ‘less is more’. Less shoe, less weight = more freedom to move.

  • Neoprene Ankle Sock – keeps little nasties out whilst maintaining mobility
  • Breathable Mesh – to help feet stay cool
  • Water Resistant – splash proof, not drench proof
  • Quick Drain Zones – to optimize dry time when wet
  • Soft Ground Sole – for traction on wet and muddy terrain
  • Mountain Lace with Toggle – for quick-secure, non-slip adherence

Weight : 500g

Primus Trail SG Mens DNA

Recycled PET
Recycled PET

Soft Ground Sole
Soft Ground Sole

A light and lean barefoot running shoe, designed for technical off-road trails.

Our new soft ground sole gives superior grip on wet terrains. It is quick draining, for minimal wet weight, with a lightweight ankle collar for support.

Built around the concept, less is more. Less shoe, less weight – more freedom to move. We had a vision for the lightest movement shoe possible; a shoe that followed the natural shape of the foot and had the least possible interference with human movement.



Primus Trail SG Mens, EU46, Olive

First impression is a great looking shoe. Not tested out on the trails yet, but when worn in-house, the high profile lugs didn't feel uncomfortable at all, I bet the grip of these shoes in muddy soft ground trails will be amazing. Can't wait to test these on a soft or loose gravel trail. Sizing was ok, toes room was as expected, roomy but not too wide or too narrow. The colour is great, I was waiting for this to come back in stock for a very long time. Two thing I have to notice though that I thought could do with improvement in future releases. When tightening the toggle, and I tried this w/ and w/o socks on, the breathable fabric on top of the tarsals (on the top of the foot in then middle) seem to lift upwards as if there was too much fabric. The second thing is the stretch ankle collar, w/o socks it seemed to leave many gaps around the ankle, it didn't seem stretch enough or it was simply larger in size that it should be. W/ socks the situation got a little bit better. Overall I think is a great off road show for soft ground trails.


I thought it would be a great shoe. If your feet are wide and the shoe in the foot its ok. But getting your feet in is terrible, and if you have a problem with swollen feet sometimes please do not even attempt to get inside. Then there is the smell of plastic. Not just a little bit, it made the whole house smell. The kids came home and said: what is this awful meat like smell and they didn't even know the much awaited shoes were in. I had to send them back. Terrible choice.

Surprisingly great product

I’d been quite unsure with my order, as I’ve always suffered with my flat feet and few shoes proved to be marginally satisfactory, especially after I started running. I received the package yesterday, and when I saw how thin the sole was and how light the shoe I thought I’d made a bad decision that would impact my flat feet and knees. I ran my first 10 km this morning in them and I still can’t believe what a wonderful urban run I had this morning. Honestly thinking to order another couple of pairs in different colors.

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