Whether used on trails or urban expeditions, XT-4 OG is a celebration of Salomon’s greatest performance features. With all the unique features that made it top of its game, from the stable, full-length Agile Chassis Skeleton to the soft, dual-density midsole component. Replica Detailing An authentic retelling of an iconic shoe, down to the smallest detail. Stability The full-length Agile Chassis Skeleton is known for delivering great stability over any distance. Responsive Cushioning Dual-density EVA cushioning in the midsole protects your feet and ensures soft landings.