Material:

Upper: Water-resistant: a mix of textile and reinforcements made from recycled PET bottles
Insole: Removable insole made from recycled materials
Outsole: SG - Soft Ground outsole (2.5 mm outsole + 4 mm lugs)

What we love about these shoes:

Wide toe box for toe space
Thin and flexible outsole providing excellent grip on all terrains
Zero-drop sole (completely flat from heel to toe)
Light shoe weight

Fit and size advice:

Length: True to size - choose your regular size but follow the size chart below
Width: Suitable for narrow to wide feet
Volume: Suitable for low to normal-high feet
Toe shape: Steeply sloping from the big toe down to the other toes. If your second and third toes are as long as your big toe, you may need to go a size up for extra room on the little toe side.

Vivobarefoot Primus Trail III SG barefoot shoes are a beloved trail shoe perfect for trail running, outdoor activities, or hiking. This shoe features an outsole that provides superior grip in forests and terrain, both on wet and dry surfaces. The sole is thin and flexible, offering excellent ground contact.
The upper is made of a water-resistant material, making the Primus Trail perfect for wet and cold weather. The upper part has a soft, breathable textile with reinforcements made from recycled PET bottles around the toes and on both the inner and outer sides of the shoe. The Primus Trail can be adjusted for a good fit thanks to the quick-lock lacing system, offering a tight fit around the ankle while granting ample space for toes in the toe box.
Care instructions: Hand wash the shoes with, for example, Colloni Bamboo lotion and spray regularly with Collonil Protect & Care to extend durability and maintain the water-resistant membrane.
Size chart
Note that Primus Trail is available in both men's and women's models. The only difference is that the women's model is slightly narrower, and the men's model is slightly wider. Men with narrow feet can suitably choose the women's model, and women with wide feet the men's model.
Here's how to choose the right size: Measure your foot. Place the heel against a wall and measure up to the longest toe. This is your foot measurement. Add 0.6-1.5 cm to this measurement to find the right size. Remember that when training in the shoes, your feet may warm up and swell a bit, so it's advisable to choose closer to 1 cm of extra room or slightly more. Check the size chart below (measured by us at Widetoes).
Example: Your foot measurement is 23.5 cm. Then choose size 37 (24.5 cm) to have 1 cm of extra space.
These measurements have been verified by us at Widetoes.

Size chart:

Size 36: 23.5 cm
Size 37: 24.5 cm
Size 38: 25 cm
Size 39: 25.5 cm
Size 40: 26 cm
Size 41: 27.2 cm
Size 42: 28 cm
Size 43: 28.5 cm