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: Performance road running shoe Supportive Fit: Breathable mesh upper with moisture-wicking lining Added Protection: Welded overlays for lightweight protection & durability with internal tenstioning strap system for a secure lockdown & support Get The Right Fit - This shoe runs 'true to size'.