Whether you prefer to run on the trail or pavement, you'll want the Injinji Ultra Run No-Show CoolMax Sock between your foot and your shoe. This technical sock uses individual toe pockets to prevent blisters and allow your foot to spread into an anatomically correct position. CoolMax material wicks away perspiration and encourages it to evaporate, minimizing chafing and keeping your foot cool. The no-show design has an extended heel tab to protect your ankle from the harsh nature of your shoe.