Wa Alaikum Salam,

The above answer is correct.

If a person is a Musaafir (Traveller), one can perform Masah on leather socks for 3 days & 3 nights.

For a person not travelling (Muqeem), one can perform Masah on leather socks for 1 day & 1 night.

Masah is to pass wet fingers over the place of Masah. In this case, fingers should be passed over the upper surface of the Khuffain (leather socks). Starting from the toes and ending just above the ankles. The Masah should be done once only on each sock.

And Allah knows best