I will start by saying, I never review purchases. I recently purchased three pairs of merino wool cycling socks. These socks are by far the most comfortable socks I have ever worn! So much so after wearing them for the first time on a 30 mile ride I gave one of the pairs to my son who is also an avid cyclist and he also agrees! I have worn wool socks for years but never found a cycling sock that was thin enough or comfortable enough. After my ride I cleaned out my sock drawer of all my old cycling socks and will never wear anything else again! Thank you swiftwick!