I, despise having to carry my water bottle, generally because I have other things to carry that won’t fit in my bag, usually Amazon packages. I also hate bags that have a random water bottle net that serves no purpose when no bottle is inside. I know this seems like a small issue, but that is exactly the point, Knack has taken everything into consideration. When the bottle pocket is not in use, it can be hidden via zipper. When it IS in use, unzipping the pocket reveals a space for the bottle. It is a subtle design aspect that I greatly appreciate.