The XT-6 is an iconic ultra runner shoe that has been the number one choice for professional athletes since its original release in 2013. The XT-6 GTX has been updated to include a GORE-TEX exterior, to enhance the durability of the shoe, and ensures it will handle extreme conditions, and a variety of terrain. The upper is PFC-free anti-debris mesh, and features an ePE membrane (expanded polyethylene) so your feet will stay dry no matter the conditions. Equipped with the high performing Mud Contagrip outsole and Ortholite insole for absolute comfort.