For the minimalist trail runners and hikers that prefer a micro crew height running sock. This version from Darn Tough features no cushion to provide the lowest profile fit and feel. Extra durability is knit into the heel, footbed, and first and fifth metatarsal. Darn Tough socks have become the favorite of many of our staff and customers, and are known for their excellent performance and longevity. Darn Tough socks are guaranteed for life, and they ask all customers to contact them directly for replacement if anything goes wrong with their Darn Tough socks.