In five instances the writers of the New Testament refer to John the Baptist’s statement that he was unfit to loose the sandal from the Messiah’s foot. Matthew’s account uses the term “carry” (3.11) which action logically occurs after untying them for the purpose of storage. The other references are found in Mk. 1.7, Luke 3.16, John 1.27, and Acts 13.25.
While observant Jews in Palestine would not participate in the practices of the Roman forces stationed among them, the current foot technology probably was adopted for practical reasons. No biblical prohibition existed dealing with such a mundane need as good footwear. So it seems natural to expect that Israelites would utilize the same approximate technology. Here are two examples from statues from the same general time frame:
Notice also the bucket of scrolls in this image which probably reflect typical storage techniques for writings by Romans: