100 day trial available

Primus Trail Swimrun Womens


Wear your sustainability statement with the Primus Swimrun FG, designed for endurance over land and sea. Using recycled plastic bottles to create a quick-draining mesh that minimises water-weight. The lightweight construction is paired with low-profile lugs for off-road traction and a neoprene ankle collar to keep out grit, ready for amphibious adventures.

1. Select Colour: Black/Orange
2. Select UK Size:
3. Optional Extras:

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

This shoe fits true to size

Order before 14.30 Mon - Thurs for UK Next Day Delivery

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 triathalons or any extra-sloppy trail runs.

  • Foot-Shaped Construction – for unrestricted foot freedom
  • Neoprene Ankle Sock – full ankle mobility in and out of water
  • Water Repellent Recycled PET Mesh – for minimal wet weight
  • Quick Drain Zones – pump water out with each foot stride
  • Sticky Firm Ground Sole with Low-Profile Lugs – for wet/dry rock grip
  • Orange Rubber – for visibility in the water

Weight : 280g

Primus Trail Swimrun Womens 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.


Nice, but big.

I ordered two pairs of shoes, both size 39 as that is my usual size. Both pair were too big. I have had to send them back at my expense and then I guess reorder as you can't exchange. Hopefully the 38s will be better as the shoes themselves are very comfortable.

not for me

I am sure the shoes would be perfect for someone else but I found then hard to get on with socks on and uncomfortable around the ankle without socks. I bought them because a man I know wears his all the time and swears by them so I actually think it is my problem and not the shoes!

Awesome to hike with!

I’ve worn this to 2 hikes now, and they are a dream! I was more confident in maneuvering slopes and rocky trails in them, very flexible with good grip. The best part is my knee no longer hurts! Got compliments from other hikers - they look cool and function well. I usually wear a EUR 35, normal width, and low instep - these fit perfectly with socks, and when I go sockless I put the insole in.

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