Hello, First, thank you. I’ve been reading more and more about prepping over the last year. You have hands down the most thought out articles I’ve read; especially for a newbie. My question: after reading about bag selections and going through many of them and their companies; why aren’t they waterproof? Many, if not all, say water resistant but I have yet to see one that is “proof”. The only mention I saw in the article was about included rain covers not being necessary.