Material:

Upper: High-quality water-resistant leather (Hydro Guard membrane)
Lining: Textile lining to provide warmth on cold days
Insole: Removable Thermal insole with aluminum layer for better cold resistance
Outsole: Firm Ground outsole (3 mm outsole + 4 mm lugs)

What we like about these shoes:

Wide toe box so the toes have space
Thin and flexible outsole that provides excellent grip in rough terrain
Zero drop sole (completely flat from heel to toe)
Light shoe weight and comfortable on the foot

Fit and size advice:

Length: True to size - take your usual size in these but follow the size chart below
Width: Suitable for a narrow to wide foot
Volume: Suitable for a low to medium-high instep
Toe shape: Steeply sloping from the big toe down to the other toes. If you have a foot where the second and third toes are as long as the big toe, you may need to take one size larger to have space toward the little toe side.

The Vivobarefoot Tracker II FG is a true classic that holds up in wet and dry conditions and accompanies you on all your adventures. Tracker is a hiking shoe that fits well for outdoor activities and hiking during spring, autumn, and winter with a soft textile lining. The upper is made of high-quality leather with a water-resistant membrane. Vivobarefoot does not offer a 100% guarantee for waterproofness, but by using Collonil Protect & Care regularly, feet stay dry, and the leather remains nice and soft for a long time.
The outsole is Vivo's Firm Ground sole, which provides excellent grip in rough terrain, even on wet surfaces. The sole is thin and flexible, and the ground contact is good in Tracker. Initially, the Vivobarefoot Tracker feels slightly stiff in the materials around the heel but becomes softer with use and quickly becomes new favorites that last a long time.
The updates with the Tracker II version include a softer inner lining and reinforced lace fastenings.