100 day trial available

Primus Trail Swimrun Mens


Wear your sustainability statement with the Primus Trail Swimrun. Using recycled plastic bottles to create a breathable mesh, paired with quick-drain zones to minimise water-weight. Quick-draining mesh minimizes water weight and low-profile lugs offer off road traction for all your amphibious adventures.

1. Select Colour: Black
2. Select US Size:

This shoe fits true to size

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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.


The Swimrun collection was developed in collaboration with ÖtillÖ, founders of the Swimrun World Championship. Seamlessly transition between wet and dry while keeping out grit and silt -- perfect for swimruns or any extra-sloppy trail runs.

  • Breathable Mesh – to keep feet cool
  • Water Resistant – splash proof, not drench proof
  • Quick Drain Zones – faster dry time
  • Firm Ground Sole – 3mm lugs for multi-terrain traction
  • Mountain Lace with Toggle – quick-secure, non-slip adherence

Primus Trail Swimrun Mens DNA

Breathable Mesh
Breathable Mesh

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

Firm Ground Sticky Rubber Outsole
Firm Ground Sticky Rubber Outsole

High abrasion, rubber outsole with low-profile, multi- directional lugs, for great traction and durability on moderately wet ground and dry, rocky surfaces.


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.


Produced using animal free products and processes.


Great All-Terrain Hiking Shoe

I'm typically between a size 13 and 14. For these I needed a size 14.

I've had these shoes for less than a month but I've put them to good use. They held up very nicely on the wet Appalachian trails in Georgia. I'm very pleased with the feel. It's nice to have a shoe that makes me feel like a kid running through the woods again.

Something to consider: the shoe opening has a relatively set size. It does stretch but if you have thick ankles it may be constraining. It happens to be a good fit for me.

Here's a tip I picked up – wear thin nylon socks (or something approximate). They have the benefit of being quick-drying and also provide a buffer for foot-shoe friction.


I LOVE em.

I ware every day, for activity and hanging out.

I’ll need another pair soon😃!!!

Thank k you for what you do VIVO ❤️

Swim-Run Perfection

If you are competing in a swim-run race this is the shoe for you. I've worn these briefly over a few training sessions and have been extremely impressed with the fit on land and in the pool.

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