Leapers, Inc. - UTG Tactical Messenger Bag Bag Black 9.5" x 12.5" x 5.5" PVC-P218B

I've been looking for a bag that can carry a couple of books along with a notebook and emergency ID. I needed the bag as a companion for my oxygen concentrator so that I will have my prescriptions and other necessities in case of emergency. The bag has plenty of velcro, and all I need now is to find a few accessory bags to attach when I need that extra space.