With a new 4 Degree Elite Fit System and ReliaWool high-density impact zones, SmartWool PhD Running Ultra Light Micro Socks deliver more comfort with an improved fit and greater durability. Great for mild weather and shorter distances.
4 Degree Elite Fit System improves fit and comfortfour elastic bands gently wrap and support the foot and allow for greater stretch and recovery while the foot flexes
Four elastic bands: ankle band, upper and lower instep bands, and arch band keep the sock in place
ReliaWool high-density impact zones provide longer lasting protection to keep feet comfortable
Soft merino wool regulates temperature to keep feet warm when its cold and cool when its warm, manages moisture for breathability, naturally resists odor, and does not shrink or itch
Ultralightno cushion for maximum performance next to the foot