Friction-reducing technology is strategically placed in the heel, toe and sole for durability and blister prevention Anatomical left and right construction so each foot has the perfect fit Deep heel pocket to prevent the sock from slipping into your shoe, ensuring the perfect fit and no-slip security Arch band support to fight fatigue Mesh zones for breathability Merrell exists to share the simple power of being outside. We believe the trail is for everyone. Our goal is to provide thoughtfully designed, rigorously tested products that over-deliver on performance, versatility, and durability.