Why is this the answer?

The answer is hair because this riddle is a clever word puzzle that describes where hair grows on your body and how you might cover it up. To solve it, we just need to look at the two big clues the riddle gives us. Let us look at the first part of the riddle: "What is that over the head?" If you feel the top of your head, what is covering it? It is your hair. Hair grows right out of your skin and covers your whole scalp, making it the natural layer that is "over" or on top of your skull. It is always there, no matter what you are doing. Now, let us look at the second part: "and under the hat?" Think about putting on a baseball cap or a warm winter hat. Where does the hat sit? It sits right on top of your head. But before the hat touches your scalp, it always touches your hair first. So, your hair is sitting safely and snugly right under your hat. The hat covers it up, keeps it hidden, and sometimes even makes it a little messy when you take the hat off. The riddle uses a fun trick! It asks about something that is both "over the head" (as in, the layer on top of your scalp) and "under the hat" (as in, the thing a hat is put over). Hair is the perfect, simple answer because it is your natural covering and is the very first thing a hat goes over. This riddle is a clever reminder that sometimes the best answer is the one that is right in front of you, or in this case, right on top of you! Your hair is a soft, important part of your body that keeps your head warm and is always waiting right there to be covered up when you choose to put on a cozy hat. It is a great example of how riddles make you think about everyday objects in a new and funny way.