Shower chair (Portobello EH15)

As can be seen from the photos, this is foldable whilst not in use. The height is adjustable and the back support can be dismounted. This chair has only been used twice, and shows no signs of wear & tear.
Although it can be folded (and is folded) for transport, I would not recommend trying to take it on Lothian busses unless you are very fit or impervious to criticism, particularly from people with prams/pushchairs. Wheelchair users and other disabled travellers, on the other hand, will appreciate its significance and accommodate it as best they can.