Please remember that these are very old socks, and they are not as stretchy as modern ones.
These socks are unsold vintage shop stock, made in the 1950s.
They are unused, and most of them still have the original tags attached from the 1950s.
The socks are obviously very old, and have been in storage for over half a century.
They will need to be hand-washed before use.
When you take the sticky tags off, it may leave a mark.