Nike Sock Sizes
Sock Size	US Men's Shoe Size	US Women's Shoe Size
M	6-8	6-10
L	8.5-12	10+

Sock Geek Says:

Wicked thin training and racing sock.  The holes you see on the top of the sock are lightweight micro vents that reduce the overall weight of the sock and allow more cool air to reach the foot.  Underfoot flex grooves mimic the natural flexibility of your foot.  Low cut in general appearance but designed a little higher in the front to eliminate rubbing from the laces and shoe tongue, as well as a little higher in the back to protect the achillies and heel.  Uses Nike BPT (Blister Prevention Technology) to help reduce the likelihood of hot spots and blisters.  Dri-FIT fabric transports moisture away to help keep feet dry and cool.

Nike Elite Running Sock Specs

Sock Fibers:

89% - Nylon
9% - Polypropylene
3% - Lycra