וּנְעָל֨וֹת בָּל֤וֹת וּמְטֻלָּאוֹת֙ בְּרַגְלֵיהֶ֔ם וּשְׂלָמ֥וֹת בָּל֖וֹת עֲלֵיהֶ֑ם וְכֹל֙ לֶ֣חֶם צֵידָ֔ם יָבֵ֖שׁ הָיָ֥ה נִקֻּדִֽים׃
腳上穿著破舊、補過的鞋，身上穿著破舊的衣服；他們所帶的乾糧全都乾硬，成了焦脆的碎塊。
Bartenura
ואם טמאים היו – the unconsecrated produce and the First Tithe into which pure heave-offering fell, for now, he is not able to produce Terumah of the tithe on another place, he separates upon it Terumah of the Tithe and sells them to Kohanim, and the Kohanim can eat them in small bits, in explanation, in a dry condition, like (Joshua 9:12 – not quoted correctly by Bartenura): “[This bread of ours….and see] how dry and crumbly it has become.”
Radak
וטלוא, a reference to larger patches, as per Joshua 9,5. We encounter this expression in this sense also in Shabbat 114, i.e. טלאי על גבי טלאי.