Salomon S-Lab Sense 5 Ultra Trail Running Shoe Synthetic Quick Drying Air Mesh - Provides key breathability and sweat wicking properties. Sensifit - Precise, secure fit for maximum comfort and stability. EndoFit - Internal fit sleeve to improve feedback and foot-wrapping. Quicklace System - Simple but strong 'one-pull' tightening system. Lace Pocket - Quick, easy and secure lace pocket.