Even the longest marches or drills will be no problem in your FoxSox. Gentle 8-15 mmHg graduated compression increases blood flow to fight fatigue and give you extra pep. Extra cushioning at heel and toe provide comfort, and reinforced heel and toe add durability and longer sock life. 8-15 mmHg graduated compression improves circulation URfit® System provides arch support and memory-knit construction Reinforced toe and heel add durability and longer sock life Vented panels remove moisture and keep you dry Smooth, flat comfort toe seam 60% polyester, 35% nylon, 5% spandex