The Darn Tough Vertex No Show Tab Ultra-Light Womens Socks has the sleek feel of a super stripped down, lightweight running sock still delivers cushioning just along the bottom of the foot. The ultimate in lightweight comfort. Darn Tough Vertex No Show Tab Ultra-Light Womens Socks 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. Merino Wool: The ultimate fiber for breathability and comfort in all conditions. True Seamless™: Undetectable seam fusion for an ultra smooth, invisible feel.