Natural & Durable : Made entirely from natural rubber

10% natural rubber

Designed to allow the toes to spread naturally

Wider toe box

Upper: Nubuck

Vivobarefoot Primus Trail II FG Mens – Insignia Blue Size:41 Natural & Durable : MadeDescription A shoe for the forest, the trail and the runner. This shoe offers natural fit, protection and non slip sole. Ideal for those who value sustainable, quality footwear. Breathable upper: Constructed with 81% recycled PET, promotes air circulation and mobility. Safe sole: The sole is produced with a 0. 8 mm Pro5 layer that protects against sharp objects without compromising the barefoot feel. Sustainable and vegan: Made with recycled materials