byACRE Carbon Fibre Ultralight - Organiser Bag
The organiser is made to hold your personal belongings, such as keys, wallet, napkins, etc. It can be attached to the back of the walker. With the attachable shoulder strap, the organiser can be carried over your shoulder like a small purse, when you are not using it on the rollator.
See this video: https://youtu.be/T36iQ7cfXRw