Michael M.wrote a review of Castelli Free 9 Sock on November 19, 2016
After trying a couple of brands I have found the the Free 9 socks have an appeal that I enjoy while riding. They are not to hot for the humid weather that I ride in most of the summer and fall. They have lasted a couple dozen rides without losing shape. The feel in the shoe is like a second skin with the protection for the 100km rides.