Reference for Kelim 24:16

שָׁלֹשׁ סְבָכוֹת הֵן. שֶׁל יַלְדָּה, טְמֵאָה טֻמְאַת מִדְרָס. שֶׁל זְקֵנָה, טְמֵאָה טְמֵא מֵת. וְשֶׁל יוֹצֵאת לַחוּץ, טְהוֹרָה מִכְּלוּם:

There are three types of hairnets: one belonging to a girl is susceptible to <i>midras</i> impurity; one belonging to an old woman's is susceptible to corpse impurity; and one of a woman who goes out is pure from all [types of impurities].

Jastrow