The Enduro Re-Engineered Quarter features Balega's famed Fit philosophy, which includes and comfotable toe box, secure midfoot, and a Deep Heel Pocket that secures the sock in place, helping prevent slippage. Strategically placed mesh panels combined with our signature Drynamix yarn helps wick away moisture, and provides reliable moisture management throughout the life of the sock. An all-new, reduced waste design utilizes less yarn to improve ventilation and reduce friction while supporting Balega's sustainability efforts by cutting yarn waste. The Enduro's medium level of cushioning is ideal for pairing with most running footwear for a comfortable fit, whether you're out for a quick, easy run or a longer training run.