Caps for Sale

This is a tale about a peddler, but not any ordinary peddler – this one carries his hats balanced on his head! After he walks a while, he decides to take a rest underneath a tree. Just to be sure, he checks that all of the caps are there and in place before he takes a nap. When he wakes up, he feels refreshed, rested, and happy… until he realizes his caps are all gone! Wherever did they go?