Our Vertex 1/4 sock is the lightest, fastest 1/4 sock we make. It's specifically designed for runners looking to shed excess weight without sacrificing comfort. Darn Tough 1/4 WMN 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 Ultra-Light: Our lightest sock for race day or anyone looking for a lighter-than-air feel from a tougher than hell sock. 1/4 Sock Height: Sits just above the ankle. The “just right” height that’s fast and light. Great for low-cut hikers and running shoes. 56% Nylon 40% Merino Wool 4% Lycra® Spandex