Description: The Primus Knit trainer from Vivobarefoot is the vision of the lightest movement shoe imaginable, following the natural form of the foot with the least imaginable interference of natural movement. This barefoot shoe puts your feet in regulate for each road run, walk and workout. Premium Sturdy leather higher with a knitted vamp and ankle sock. Cushy and breathable textile lining. Removable performance insole. Ultra-skinny, versatile and foldable. Sturdy rubber sole for max sensory feedback and minimum interference.