Smartwool PhD Cycle Ultra Light Low Cut Socks - Women's: When you're 10 miles short of a century, the last thing you should be thinking about is your feet. Unless you're wearing this cycling sock, in which case you're probably thinking about how comfortable your feet are. Here's why: Merino helps wick moisture and regulate body temperature, the 4 DegreeA(R) elite fit system delivers a dialed fit and the Virtually Seamless(TM) toe protects against abrasion. Now featuring Indestructawool(TM) technology for ultimate durability. Features Virtually Seamless? toe 200 needle construction provides highest knit density while maintaining ultra light weight 2.25" overall height