The SmartWool Hike Light Crew Socks feature a greater volume of wool for enhanced comfort, greater cushioning and comfort and lasting effectiveness over greater distances. The socks feature a 4 Degree Fit system for an exceptional secure ride. Higher-density wool has been placed in high-impact areas along with WOW Technology for added protection and durability. Flat-knit seaming across the toe offers a smooth fit, increasing your comfort and preventing the risk of chafing and blistering.