Brooks Sock Sizes
Sock Size	US Men's Shoe Size	US Women's Shoe Size
M	6-8.5	7-9.5
L	9-11.5	10-12.5

Sock Geek Says:

Key features include:

Merino Wool plus Bamboo effectively manages moisture while also keeping your feet comfortable with a smooth soft feel.

Mesh top reduces bulk and allows better air circulation, keeping your feet cool and comfortable.

Achillies tab helps protect against blisters in this friction prone area.

Arch compression helps prevent socks from sliding into your shoe while running.

"Y" heel gore creates a deeper heel pocket, providing a better fit.

A flat toe seam all but eliminates the chance of abrasions caused by friction between harsh seams and toes.

Brooks Infiniti Merino Sock Specs

Sock Fibers:

35% - Merino Wool
35% - Bamboo
28% - Nylon
2% - Lycra Spandex