Size Guide :
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Description
xMeet the new Primus Trail Flow, a natural off-road performer. This streamlined silhouette provides both exceptional grip and responsive ground feel to move mindfully across a variety of terrains. The durable, breathable 100% recycled polyester mesh upper keeps those agile feet cool and secure with engineered, anti-slip lacing.
Naturally excel on any trail
The lightweight, high-performance barefoot trail runner
Product Info
TRAIL FLOW AT OUTSOLE
Lightweight grip for fast, all-terrain adventures.
NO INSOLE
No insole, bringing you even closer to the ground for a greater barefoot experience.
BREATHABLE MESH
Breathable, lightweight and comfortable.
VEGAN*
*The main materials in all our Vegan* products are synthetic and aren’t derived from animals. We don’t (yet) have the transparency we need over the production of all the small components (such as adhesives and dyes) used in these products to ensure they meet vegan best practices. So, whilst we believe the shoes are vegan, we’re not yet able to guarantee it and want to be fully transparent.
WEIGHT
Based on a single shoe in Men's size: EU 42 | UK 8 | US 9
219g
Size & Fit
This Vivo fits true to size.
MATERIALS & TRANSPARENCY
UPPER
100% recycled polyester mesh, TPU overlays; 48% recycled thermoplastic polyurethane (rTPU), 42% TPU, 10% polyurethane (PU)
LINING
Collar lining: 100% recycled polyster (rPET), Tongue lining: 80% rPET, 20% PU
FASTENING
100% rPET laces
OUTSOLE
Midsole: 100% expanded thermoplastic polyurethane (E-TPU), Outsole: 30% synthetic rubber + 24% nitrile rubber + 20% natural rubber (latex) + 18% filler + 8% vulcanising agent
MADE IN VIETNAM
Care
Cleaning
Clean with a slightly damp, soapy cloth.
Drying
Remove insole and dry at room temperature. Keep out of direct sunlight and avoid intense heat source.
Aftercare
Vivobarefoot Repel: Protector can be used to replenish the water repellent qualities.
End of life
The Revivo Take Back program is our initiative to extend the lifetime of our shoes and keep them out of landfill. Customers in the UK, US and Europe can send us your worn Vivos for free. Sorry global Barefooters, we’re working on expanding free shipping for our Take Back program to more regions, and eventually, make this available worldwide.
Reconnect and run slow
Feel your closest to the ground
As you connect with the trail, a super lightweight and flexible ETPU midsole and an All Terrain outsole keeps feeling in and trail debris out. The Primus Trail Flow’s streamlined 1.8mm base and optimised 3.5mm lug height mean you pick up every nuance of the Earth beneath your feet, letting you run off-road with precision and confidence.
Fit, Feel, Flex
For natural stability, natural sensory feedback and natural strength.
TRAIL FLOW AT OUTSOLE
Our lightest, most agile trail outsole yet. Built for fast hiking and trail running across varied terrain, with a new construction that maximises grip, resists abrasion and delivers lasting durability.
Sole base
1.8mm
Tread Depth
3.5mm
Embrace your human nature
The best piece of technology ever to be put in a shoe? The human foot. So let's set it free. You've got everything you need, naturally.
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