“I use these for fell running in wet boggy freezing winter conditions. They fit well and are comfortable when dry. As they get wet they hold a layer of water against the skin and this remains warm. The only thing that I noticed was really when you have been in the wet for a few hours. air pockets pockets form more regularly underfoot so you get that squelchy feeling and sound. There is a seam running under the heel which looks like a blister maker but I was surprised that I was blister free after 4 hours but it was an niggling feeling. The sock needs pulling back now and then if it gets fully saturated but I run with loose shoes so it is expected. All in all these have been a brilliant buy and I’ve ditched my waterproof socks completely in favour of these. They dry pretty quickly too.”