Beloved by thru hikers logging hundreds of miles on the AT and everyday enthusiasts alike, the Darn Tough Women's Summit Stripe Cushion Boot Sock combines comfort and durability to provide legendary performance. Darn Tough's performance fit ensures that it won't bunch or slip inside your boots, meaning no blisters. Full cushioning helps you keep going mile after mile. Merino wool regulates temperature to keep your feet comfy year round, and it has natural antimicrobial properties to keep odor causing bacteria at bay when you have to wear them multiple days in a row. The merino wool is blended with nylon for fast drying performance and durability, and a bit of Lycra increases stretch for comfort.