I am newish to disability travel. I am reading lots of the various post on FT. My issue is early on, so I am just getting to the cane/walking stick level. Had a placard for a couple years. Reading this post I was not sure what a rollator is versus a walker. Looked it up. For others wondering the same, here is what I found:
A rollator is sometimes called a "wheeled walker." It consists of a frame with three or four large wheels, handlebars, and a built-in seat.
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If your condition requires you to stop and rest often, a rollator could be a better choice for you. Whereas a walker has no seat, a rollator with a seat and a crossbar for back support allow the user to stop and rest when needed.
Rollators also have accessories that can be purchased, such as baskets to hold a shopping bag.