I did some myog socks with 100g/m2 primaloft and momentum leftover from a thru hiker minima vest.
size 44 (10.5) weight is 50g/1,8oz for the pair, but no fancy things like a sole or an elaborate closure.
the look is terrible , they are only usable for sleeping, but for the weight its way more warm than any socks i have.
would be great if BPL extended their cocoon line with some light and better done insulated socks for sleeping so we could be equiped from head to toe !
edited to add oz and US shoes size.