Light, versatile and always up for more. A dialed-in precise fit makes for a won't-quit sock when the challenges pile up. FEATURES Performance Fit: No slipping, no bunching, and no blisters. Fine Gauge Knitting: Unprecedented durability and our unique “put it on, forget it’s on” feel. Fast Action Wicking: Pulls moisture away from skin. Fast drying. All Weather Performance: Cool in the summer, warm in the winter. Naturally Antimicrobial: Repels bacteria and odor. Guaranteed For Life: No strings. No conditions. For life. True Seamless™: Undetectable seam fusion for an ultra smooth, invisible feel.