Very light and quick-drying ArmourDry technology improves performance. It disperses moisture evenly, allowing sweat to evaporate faster for a lighter, drier, cooler run. Breathable mesh ventilation channels where it's needed most. Energy Return cushioning on the heel and toe for added protection in high-impact areas without bulk. Arch support helps reduce foot fatigue. The anti-odor technology reduces odor in the sock. The seamless toe provides excellent comfort and reduces irritation.