My Giro socks in a size medium black came in today. I am a size nine and they fit me perfect. Went for our Group ride Thursday night here in kansas at 630 PM and the temp was already at 40 degrees at start. By the time we were finished the temperature had dropped to 34 degrees. I didnt notice till I got home when I started to take my shoes off that I completely forgot about the New GIRO Socks were on my feet.lol The reason for this is because my feet never got cold. As the saying goes, when something is comfortable you dont notice it. I need to mention I was wearing my early spring booties but I have worn other socks before and my feet still got cold by the end of the ride. Get these while they are on sale you wont regret it. Quality Merino Wool cant go wrong Gents.