This bag spent 5 days in the Rockies getting rained on every day and everything stayed dry. I love the space, the inside dry sack (for wet swimsuits etc.) and the easy to carry shoulder strap. Well made and roomy! Love the color too! I secured a sleeping bag pad to the top under the compression straps and checked the bag that way on an airline and it came through beautifully. We ordered two with the intention of returning the one that didn't get to us in time for our trip. The bags were so nice, we kept both!