A: Hello Gertrudis - Yes this adaptive backpack has a slip pocket in the main body of the backpack, with a slit on the top of the backpack for the tube to travel through. It would be a great product for your intended use.
A: Hello Rama - This Cat & Jack backpack is not waterproof. However there are many other features such as multiple organization and sternum straps that make this backpack a great choice. Thanks!