Size up 1/2 a size Natural Movement Design: Barefoot + minimalist principles with a wide toe box for natural splay, zero-drop for proper posture, and flexible, low-to-the-ground sole for a connected, natural experience Lightweight Performance: Our icon that started it all; multi-purpose athletic shoe Supportive Fit: Breathable mesh upper with moisture-wicking lining Added Protection: Synthetic overlays with tensioning strap system for lockdown & support Durable: Dual chevron lugs for traction on the trail and beyond Size up 1/2 a size The Prio is the most comfortable shoe for everything you do. Whether you’re out on a run, trying out a new trail, hitting the gym, or toeing a slackline, you’ll love the Prio’s combination of freedom and protection. Revel in the freedom of movement with a breathable design and lightweight construction.