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Thorlos invented the activity-specific sock decades ago. Millions have loved their Thorlos ever since The XJ is the traditional Thorlo and features the padding you know and love Moisture Wicking Cooling Fibers Impact Protection Made in the USA Enjoying short but intense runs or going long distances on all terrains, in most weather conditions resulting in moderate to significant stress on the foot. Specifically engineered to deliver maximum protection and comfort in the critical strike zones for any runner prone to blisters, foot pain or discomfort.







