Me too. Their ultra-sil nylon bags will hold water, in or out, and they are extremely light and pack small. I am accumulating more of their stuff all the time. I have not tried the bag liners. Do they add a lot of warmth? Can you use them alone in the summer? I have not spent the money yet to try them and you are the first person I have talked to that has. I have read very mixed reviews on them.