@Hunteast I have used them for 3ish years. Been excellent but take a little to get used to. They are more of a slip on sleeve as they are not a perfect fit like a traditional sock.
They appear to be made of several layers (3 I think) and if you used them like a standard sock they end up delaminating (can feel the layers slipping) but still work well.
I got them out of the UK.
Cheers
Fireflite
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