I have washed and stored these. I am selling them because I don't think I will use them anymore. I was able to use them warmly and comfortably even in cold water, without water seeping in. I haven't worn them in a while, so I'm not sure if they still leak. There is some pilling. DexShell seamless waterproof socks, excellent breathability, perfect for outdoor activities. - Brand: DexShell - Features: Seamless waterproof, breathable - Size: L Thank you for looking.