The Smartwool ultra light cushioned PhD® Running Light Micro is the perfect running sock for mild weather and shorter distances. Thanks to ReliaWool™ Technology in high density impact zones, these socks are sure to outrun your running shoes.
New 4 Degree Elite™ Fit System using two elastics for greater stretch and recovery to keep the sock in place.
Patent pending ReliaWool™ Technology in high impact areas providing the longer lasting protection to keep feet comfortabl.
Flat knit durable toe seam for high burst strength