I have a bag that is similar to a purse. I have only used it probably less than ten times. No one ever knew I had a dog in there, even in Target. One side has black mesh, the other side is solid with a pocket the full length. I just put the mesh side next to me if it was somewhere I shouldn't have had a dog. But the mesh isn't really easy to see through anyway. I am a bag junkie and have too many. If you are interested I will sell it for $30. Here are a couple of pictures.
Travers Bag compressed small.jpgtavers bag vertical small.jpg
The top has a double zipper and snap at the end. One end can zip down as well.