Salomon XA Pro 3D Limited Edition Trail Running Shoes Sensfit System - Works to cradle the foot whilst providing a precise and secure fit. Non-Marking Contagrip Outsole - Employs differing combinations of harder, softer and grippier Contagrip compounds. 3D Advanced Chassis - Salomon's low profile Advanced Chassis, placed between the outsole and midsole, maximises security, motion control, energy management and push through protection for a high performance, stable and responsive ride. Breathable Mesh Upper - Quick drying and allows the foot to breathe, keeping it cool and dry at all times. Quicklace System - Easy on, easy off system for a secure and customised fit.