Size Guide :
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Description
xHit the trail to rewild yourself and reconnect with nature. The Primus Trail 3.5 FG is a light, durable, flexible trail-running trainer that brings us one step closer to circular footwear.
Firm Ground outsole
Stand firm on multiple terrains.
ORTHOLITE INSOLE
The Ortholite Performance Insole is made of 98% recycled polyurethane foam, which helps reduce waste and the use of virgin plastics.
BREATHABLE MESH
Breathable, lightweight and comfortable.
WEIGHT
Based on a single shoe in Men's size: EU 42 | UK 8 | US 9
281g
MATERIALS
UPPER
Vamp: 100% Recycled polyester mesh, Overlay: 95% recycled polyester/5% recycled spandex
LINING
Mesh:100% Recycled polyester, Microfiber: 80% recycled polyester / 20% Polyurethane
FASTENING
Laces
LACES
100% Recycled polyester
INSOLE
Ortholite Performance: 98% Recycled Polyurethane Foam / 2% Water-based binding agent
OUTSOLE
90% Synthetic rubber / 10% Natural rubber
MADE IN VIETNAM
CARE
Cleaning
Brush off mud and clean with a damp cloth
Drying
Remove insole and dry at room tempreture. Keep out of direct sunlight and avoid putting on a radiator.
Aftercare
LIQUIPROOF PREMIUM PROTECTOR. With wear, your shoes may loose some water resistent quality that is applied to the textile of the shoes. This product can be used to replenish the water repellent qualities.
Repair Options
Laces and insoles can be replaced.
End of life
Once you can’t repair or don't need them anymore, send us your old Vivos and we’ll make they sure they’re given a second life, or if they’re really well-loved, we'll store them until we launch our recycling solution.
Feel the earth
Tough, all-terrain trail trainers – one step closer to circularity
Fit
Better Balance and Posture
Foot-shaped fit enables toes to splay supporting balance and a stable base of support.
Feel
Improved Coordination And Agility
Thin sole allows the thousands of nerve endings in each foot enabling the sensory feedback the brain needs to move with skill.
Flex
Improved Strength and Natural Movement
Flexible footwear let the muscles and tendons load and recoil, supporting stronger, more resilient feet over time.
Run and roam wild
Built for trail running and adventuring closer to nature
The Primus Trail 3.5 FG is for runners who live for the end of the road. These all-terrain trainers are light and flexible enough to move freely, and tough enough to run wild on rough, rocky ground. Made with recycled, vegan*, high-performance materials.
We're on a mission to create a fully circular shoe – a new Vivo made from an old one, which can in turn be made into another. The Primus 3.5 is a big step forward on this journey.
With an already mechanically recyclable outsole, the challenge is making an upper from 100% polyester, which can be recycled. The new Primus Trail 3.5 upper takes us from 34% to 76% polyester, of which 93% is recycled. Why not 100%? Because some parts of the upper still need extra durability that polyester can't yet provide. We’re working with our partners to figure out this final piece of the puzzle.
We're on a mission to create a fully circular shoe – a new Vivo made from an old one, which can in turn be made into another. The Primus 3.5 is a big step forward on this journey.
With an already mechanically recyclable outsole, the challenge is making an upper from 100% polyester, which can be recycled. The new Primus Trail 3.5 upper takes us from 34% to 76% polyester, of which 93% is recycled. Why not 100%? Because some parts of the upper still need extra durability that polyester can't yet provide. We’re working with our partners to figure out this final piece of the puzzle.
multi-terrain
Giving you grip and ground feel on everything from wet and dry, rocky and firm terrain.
Urban
Stripped-back soles for barefoot living — so you're never too far from nature, even in the city.
Fit, Feel, Flex
For natural stability, natural sensory feedback and natural strength.
Firm Ground outsole
The Firm Ground outsole is made sticky rubber compound that provides excellent grip and durability. With a 3mm base and 2.5mm lug height, plus a textured arch for zonal grip (ideal for technical trail movement), this sole will keep your feet firmly planted on multiple terrains - wet to dry, concrete to rocky.
Sole base
3mm
Tread Depth
2.5mm
Welcome back the wild.
Human beings aren’t separate to nature, we are nature. When we listen to its rhythm and connect to its intelligence, we thrive. It's time to get outside and rewild.
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