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 approximately 17 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 US 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.

  • 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

Primus Trail SG Mens DNA


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


Produced using animal free products and processes.

Breathable Mesh
Breathable Mesh

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

Eco Rubber
Eco Rubber

A no-sew material, made from recycled tyres, with high abrasion resistance where you need it most.

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.



Thumbs Up

Very barefoot feel. Generous toebox, but the toebox could definitely be wider so that it could accommodate in shoe correct-toe toe spacers. Shoes come with a drawstring style play system, and an extra pair of laces if you would prefer to tie your laces. Amazing grip soft ground due to the lug height.

Love these shoes, and every other pair of shoes I have from Vivo. I just wished they offered a wide (W) option for shoe models, or made their toebox on all of their shoes wider.

Great trail runners

I took my new Primus Trail SG's to the river trail by my house for a couple mile run and they handled very well. The trail was wet and muddy in areas and I didn't slip once. I wore the performance insoles and my Injinji toe socks and the combination felt great. I did however get a blister on the back of my ankle but that's probably just because I haven't been running much recently. Overall the shoes and insoles felt great.

bad fit

Have worn a previous iteration of this shoe in the past. It was great/awesome/wonderful/etc. for trail running and mud-run events. Was looking forward to the same with these. But the newest model has sizing issues. In my size, my foot (side-to-side) was squeezed too tight (it hurt). In the next size up the width was fine but my toes were nearly an 1 inch (2.5cm) from the end of the shoe, so it was too long. Very disappointed as I was excited to get new Vivobarefoot trail shoes.

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