It is an adverbial clause of reason, as it explains why the women covered their hair.
The clause in parentheses, "that covered their hair," is a relative clause. It provides additional information about the noun "masks" and is introduced by the relative pronoun "that." Relative clauses function to modify nouns and can be essential or non-essential to the meaning of the sentence. In this case, it is essential because it specifies the type of masks being referred to.
Yes, the moose is covered with hair (fur).
Yes they actually are they are covered in fur pink or brown depends if they are in mud.
Hair.
Yes, Punjabi's must have their hair or head covered but only if they are Punjabi women.
The hare is covered in hair?
Mammals are not covered with feathers. Mammals grow hair, but do not have to be covered with hair. Birds are covered with feathers.
fur/hair
Hair.
An Echidnas body is covered with hair to keep them warm
Apart from skin, they are covered with dense fur (hair).