an underfoot band supports your arch and secures the fit

chrome-free leather for everyday natural movement

but it’s critical to understand how what you put on your feet each day can play a bigger role in the function of your feet

but if you want a little extra wiggle room

Vivobarefoot Men's Primus Trail Knit FG - Obsidian/White Size:41 an underfoot band supports yourThe Primus Trail Knit Firm Ground is for barefoot runners who want to feel the ground beneath their feet and the wind in their soul. Made with a knitted upper and a Firm Ground Sole, to create a lighter, flexible and more breathable version of the original Primus Trail that's still ideal for rough, rocky terrains.