Keilim 26:1

The following can be made susceptible and insusceptible to ritual impurity without the input of a professional: a sandal from the town of Imki and a pouch with laces; Rabbi Yehuda adds an Egyptian basket. Rabban Shimon ben Gamliel says that a sandal from Ladiki is similar to the Imki sandal and the pouch. Rabbi Yosi said that all utensils can be made susceptible and insusceptible to impurity without the input of a professional. Rather, the utensils in this mishna remain susceptible to impurity even when they are unlaced because an untrained person is able to restore them. Purifying a utensil by removing its straps was only stated of an Egyptian basket, which even a professional can’t restore.

Keilim 26:2

A pouch with laces whose laces were removed remains susceptible to impurity; if it was flattened, it is rendered insusceptible. If a cloth lining is added to the bottom, it is susceptible to impurity. Regarding a pouch inside a pouch, if one of them is rendered ritually unclean by a liquid, the other is unaffected. A pouch for a pearl is susceptible to impurity. Rabbi Eliezer says that a money pouch is susceptible to impurity, though the Sages say that it is insusceptible.