In reply to Removed Userrabthecairnterrier:
Your experience is contrary to mine. My Aldi ones quickly leaked and the outer fabric itself wore through alarming quickly exposing the membrane. The Aldi ones look like they could could be made by Dexshell. My Sealskinz are more robust and warmer to boot if you pardon the expression.
Other Aldi stuff, especially some of their cycling kit has been excellent.
To the OP. Membrane socks have a very hard life, flexing all the time, compressed and rubbing against the shoe material. They are good but don't expect miracles.
Post edited at 20:51