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/Orange
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.


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
  • Removable Thermal Insole – 4-season protection

Weight : 600g

Primus Trail Swimrun 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.

Removeable Insole
Performance Insole

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

Breathable Mesh
Breathable Mesh

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


Heat fused together for lightweight structure and stich-less durability.

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


Great Trail Shoe

Like some others have already pointed out: getting your foot into this shoe will be the Greatest Challenge of Your Life. But, once you do, they fit like a glove. The neoprene at the ankle feels a little tight/weird at first, but I love that it keeps pebbles, sand, and other stuff out.

Also love the 'swimrun' sticky rubber. I think the whole swimrun range is one of the best things Vivo has done and I hope they continue it indefinitely (with more colors!), because I'll sure keep on buying. Overall a great trail running shoe and the Trail Freak replacement I've been looking for.

One of my favorite shoes

These shoes are great. They have a snug fit that I like. Not a tight fit but the sort of fit that adheres to the shape of your foot. Much like neoprene surf/swim shoes. The construction is sturdy and the shoes drain easily. Though they are not the soft ground style and lack the lugs I took these on a muddy hike on Kauai. The shoes held up and drained well. Though my feet and shoes were covered the shoes cleaned very easily and I was not left carrying around any mud for the entire hike. Overall these are the shoes I'd recommend for triathletes or life guards.

I wanted to love them

I found the width perfect but the length quite a bit longer than needed, an inch or more. But for me the real problem was the collar around the top of the shoe. It was so tight it was a struggle to get the shoes one. They were comfortable enough once on but having to fight with my shoes for 5 minutes every day made them unworkable for me. I was sad to send them back, they were great looking shoes and I looked forward to using them a lot in the woods and streams near my house.

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