Very lightly used Prio does it all with lightweight performance, efficiency, and speed. Low to the ground for balance and agility, Prio has an anatomically wide toe box for power-producing movement. At just 7.6 ounces (M9) with a breathable mesh upper, you´ll barely know it´s there. But the dual-direction chevron tread and huarache-inspired tensioning system provides stability and ground-gripping confidence.