Upper : 100% calfskin

Superior Grip: With a lovely rubber sole

Straps : Soft lined synthetic material with adjustable velcro for optimal fit

Where are your feet taking you next

Insole: 100% RPET

Vivobarefoot Primus Trail II FG Mens – Obsidian Size:42 Upper : 100% calfskinA trail shoe with a good balance between comfort, protection and durability. Ideal for trail running, adventure and outdoor activities. A minimalist shoe that allows your feet to breathe. Good grip and good protection : Good for varied terrain thanks to the Firm Ground outsole, which has a 2. 5 mm base and 4 mm studs. The knobby curve provides grip on technical terrain. Environmentally conscious materials : Produced in part from recycled plastic