With just a little bit of cushioning, the Light PhD Micro running socks have just enough padding where you need it. Whether its an ultramarathon or a quick job around town, these socks will keep you comfortable along the way...well, as comfortable as possible for an ultramarathon.
New 4 Degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place
Patent pending ReliaWool Technology in high impact areas provides the longer lasting protection to keep feet comfortable
Flat knit durable toe seam for high burst strength