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Compare your insole length to the guide below. To find your insole length, measure your foot and add 1.5cm for a regular fit, 1cm for a snug fit or 2cm for a looser fit. If you are between sizes we recommend going for the larger size.
To measure your foot most accurately, stand on a tape measure with your heel against a wall. While standing up and looking over your foot, read the measurement at the end of your longest toe. Remember to measure both feet and use the measurement of your longer foot. Find out more here.
"Insole cm" is our in-store measurements of the shoe's insole. "Brand cm" is the insole length the brand has given us, which is what you'll find on the box or on the brand's website. Our shoes are measured with the same method each time, so use the "Insole cm" column to get an accurate size you can compare across brands.
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Lightweight, vegan trail shoes designed for all-terrain use, featuring a breathable recycled mesh upper, firm ground outsole for grip, and an OrthoLite insole for sustainable comfort.
Hit 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.
First and foremost a trail runner, the Primus Trail II FG also excels at fastpacking and hiking. Its low profile even makes it popular for outdoor-forward city lifestyles, including HIIT workouts and strength training.
The wide, thin, flexible build offers supreme sensitivity and natural mobility on uneven ground. The quick-lace system allows for fast on-off and easy adjustments. And the Firm Ground sole balances sensitivity, grip and speed on varied hardpack terrain, building natural strength with every step.
Key Features:
Perfect for trail enthusiasts aiming to reconnect with nature, the Primus Trail 3.5 FG combines functionality, durability, and environmental responsibility.
Brand : Vivobarefoot
Model # : ptrail-3-5-w
Loc : CU-1
Gender : Womens
Shoe Type : Trail
Product Family : Primus
Drop : 0mm
Foot Type : Neutral
Cushioning : Barefoot
Width : Standard (Wide Toebox)
Vegan : Yes
Heel Stack Height : 5mm
Toe Stack Height : 5mm
Weight : 281g per shoe (EU 42)
Upper : Breathable Mesh
Insole : OrthoLite Performance insole
Outsole : Firm Ground
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