Smart Wool Running Socks is seen as an industry leader because “athletes” themselves wear the socks during workouts. All the socks contain Merino Wool because it is lightweight, moisture wicking, and prevents overheating. Thus, the socks can be worn comfortably for long durations. Smart Wool only sources from farms which practice sustainable breeding and animal welfare, avoiding the issue of overbreeding. All patents held by Smart Wool also increase the socks' elasticity and overall construction to accommodate different shapes of a wearer's foot. In addition, Smart Wool Running Socks are completely seamless. The socks are the only ones designed for “casual training”, as well as “marathon training”. Merino Wool Running Socks do the same, and being patented, provide adequate comfort and performance for every activity.