Vivobarefoot Primus Trail FG 3.5 Mens Silver Birch Size:47eu All come with the S4

All come with the S4 performance monitor

Improving balance

Frankie is slip on and endlessly cozy so the always trendy silhouette will also be always comfy

Made for trail running

Fit Feel Flex: For natural stability

Vivobarefoot Primus Trail FG 3.5 Mens Silver Birch Size:47eu All come with the S4RUN AND ROAM WILD BUILT FOR TRAIL RUNNING AND ADVENTURING CLOSER TO NATURE The Primus Trail 3. 5 FG is for runners who live for the end of the road. These all terrain trainers are light and flexible enough to move freely, and tough enough to run wild on rough, rocky ground. Made with recycled, vegan*, high performance materials including an 71% recycled polyester upper. FIT, FEEL, FLEX For natural stability, natural sensory feedback and natural