We got these because my wife is training for the mountain to coast race from john o groats to lands end , with ultra running Ltd .. the race has cut off times and must be completed inside 17 days.. so the correct kit is essential, she tried a few socks all were fine for a single day ultra , but a epic event like this needs epic sock.. sums are that epic sock we will be buying 17 pairs for the race and another 10 pairs minimum for training.. they’re so comfortable everything about them spells class
