100 day trial available

Primus Trail SG Mens


Wear your sustainability statement with the Primus Trail SG, ready to hit the trails with high-profile lugs for superior grip on muddy and loose terrain. Using recycled plastic bottles to construct a quick-draining and breathable shoe, featuring a lightweight stretchy ankle collar for unrestrained mobility whilst keeping out grit.

1. Select Colour: Olive
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.


An unswerving favourite with our team of off-road competitive athletes, Primus SG is geared for technical off-road trails. We’ve focused on providing a quick-dry design with superior grip. Keep your footing and fly over the slipperiest, mushiest trails.

  • Neoprene Ankle Sock – full ankle mobility in and out of water
  • Breathable Recycled PET Mesh – to keep feet cool
  • Water Resistant – splash proof, not drench proof
  • Quick Drain Zones – faster dry time
  • Soft Ground Sole – traction on wet and muddy terrain
  • Mountain Lace with Toggle – for quick-secure, non-slip adherence

Weight : 174g

Primus Trail SG Mens DNA

Breathable Mesh
Breathable Mesh

Synthetic multi-ply materials, to deliver optimum lightweight breathability and comfort.


Patented, ultra-thin, puncture resistant layer. 5x more puncture resistant than a standard sole of the same thickness.

Recycled PET
Recycled PET

Recycle PET. Repurposing plastic waste by giving it a second life in our shoes and keeping it from entering landfill and our oceans.

Removeable PerFormance Insole
Performance Insole

3mm performance insole. Take it out to feel the ground. Leave it in for a little extra warmth.

Soft Ground Sticky Rubber Outsole
Soft Ground Sticky Rubber Outsole

Sticky Rubber outsole with aggressive lug design, customised to avoid clogging, with tooth like side lugs for traction. Made for soft, wet and muddy surfaces. Not suitable for the city... or the faint hearted.


Produced using animal free products and processes.

Water Resistant
Water Resistant

Pretty damn close to waterproof.

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.




They are fantastic, unique design! Unfortunately the mesh is too tight so i had to return them. I don't understand why they are so tight and also have laces. If they where one cm wider in the ankle people with smaller feet could use the laces to tighten up. Maybe there are not too many 188cm tall, 100kg out there.... Its a pity because i loved them! Also had the same problem with the Ottilliö model.

Very good shoe for what it's made for

Absolutely brilliant shoe for soft and/or slippery terrain. I bet these will be good on snow as well. On harder surfaces, such as rocky trails or gravel, not so much. I much prefer wearing my pair of Stealth II over these on firm ground.

The fit is a bit more narrow compared to Stealth II as far as I can tell, but not restricting in any way. Fits like a glove.

I hiked through few kilometers of swamp a few weeks ago in these shoes. Only a few steps on dry land and all water had escaped leaving my feet warm and cozy. These shoes feel better when running than walking.

The neoprene 'collar' on these shoes did leave a mark on my right achilles at first, but that foot doesn't function properly to begin with so I wouldn't put any fault on the shoe.

Overall I woudn't recommend these to be your only barefoot shoe unless you only do soft trails. But for soft trails, these are great.

Pretty good shoe

Very nice product! I have used many kinds of vivos and these are otherwise perfect but ”mouth” is too small. Its little hard to put your feet in and it starts to press ankle after a while.. But I believe that in time they start to modify by my feet..:) i recommend these anyway! They will not fell of!

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