You might like to look at Chapter Five of this excellent survival story in which Brian remembers some advice that an English teacher gave him concerning staying positive and remaining on top of situations. Trying to do this, Brian lists the items that he has been left with and uses this as a starting place to think of how he is going to survive this experience. Note how he lists his items of clothing:
He had on a pair of good tennis shoes, now almost dry. And socks. And jeans and underwear and a thin leather belt and a T-shirt with a windbreaker so torn it hung on him in tatters.
Thus we can see how little Brian has as he begins his wilderness experience. He has but basic clothing, and a windbreaker that is almost useless in terms of protecting him from the elements. However, if you read on in this chapter, you can see how he sees that he actually has more than this and is able to use what he has to hack out some kind of precarious means of existence for himself.