1)
How is it possible that their garments did not wear out during their entire stay in the desert?
1.
Rashi (from a Midrash): Because the Ananei Kavod washed and ironed them even whilst they wore them. Moreover, the children's clothes grew with them, just like a snail's shell grows with it. 1
1
See Ramban.
2)
Why did their feet not swell in the way of people who walk barefoot in the desert?
