Salomon XA Pro 3D Ultra 2 Waterproof GORE-TEX Trail Running Shoes Sensfit system -Works to cradle the foot whilst providing a precise and secure fit. Non-marking running Contagrip combining several different hardness of combinations of Cont 3D advanced chassis - Salomons low profile advanced chassis, placed between the outsole an Quick drying breathable mesh - Allows your feet to breathe, keeping them cool and dry at a Quicklace - Easy on, easy off system for a secure and customised fit.