I like this little bag. I don't know what people are complaining about with the waterproofing. I have no need for waterproofing, but this was one of the few bags I found that was small enough and would clip to my messenger bag.I have testing the closing on it and it does keep things dry, as long as you carefully follow the instructions. Basically, you have to fold the top down at least 3 or 4 times to seal it. Then you have to secure that by connecting the 2 ends of the strap to something. If you overfill the bag or you don't strap it closed, the seal won't work.It's fine for what it is, but it doesn't meet all my needs. It's all about the clipping.I carry a messenger bag every day and was looking for a small clothing bag that I could clip to my messenger bag when I go to the gym. It's a great size for that, but attaching it to my messenger bag is a little awkward. As stated above, to close the bag you have to fold the top over a couple of times and then clip the 2 ends of the strap together.I clip the strap around the shoulder strap of my messenger bag. Trouble is, if I stop there, it slides around a lot when I'm on the train, so I also have to secure it a second time using the caribiner clip that came with the bag. So basically 2 attachments.I would prefer a bag that closes with a zipper and then clips to my messenger bag with the caribiner. So I'm still looking.