TRAIL 2.0 Midweight Micro is the elite sock in its field specifically designed and tested in the harsh and unpredictable terrain of trail running. Built to last for endless mileage powered by Injinji's 5 Toe Fit System(TM), this toesock provides extra padding under the foot for maximum protection. A double elastic cuff and mesh top lock keep dirt and debris out while allowing your foot to breathe. You're getting the unmatched benefits of natural toe splay, blister prevention and superior moisture management with Injinji. This sock is a winner to make you a winner.