A new and quite detailed booklet on this topic:
“Masah on Socks” by Maulana Zakariyya Makda
Jurabain are non-leather socks of wool, cotton or any other cloth. There are some narrations which mention masah on jurabain. […]
In Ahkaamul Qur’aan, Jassaas says:
“They (the Fuqaha) differed on the question of masal alah jurabain.
According to Imaam Abu Hanifah and Imaam Shaafi (rahmatullah alayhima) masah on jurabain is not permissible except if they are mujallad (i.e. leather sewn over them).
Tahaawi narrates from Imaam Maalik (rahmatullah alayh) that masah on jurabain is not valid even if they are mujalladain (on which leather has been sewn). Some of the Companions of Imaam Maalik narrate that according to him, masah on jurabain is not permissible except that they be mujalladain like khuffain.
Thauri, Abu Yusuf, Muhammad and Hasan Ibn Saalih (rahmatullah alayhim) said that if the jurabain are thakheenain, then masah on them is valid even if they are not mujalladain.”
[from the booklet “Masah alal Khuffain” by the Majlisul Ulama of South Africa]