My husband's ultra narrow walker came very quickly and so we were able to discard the large one he had from the O.T Service. It has proved to be a brilliant buy. He can easily transport it from room to room. The only change we had to make was on the rubber feet. They, like on the old one, wouldn't glide easily, so we glued two flat smooth tops from some vitamin pots, which just fitted, and now they glide beautifully. Carpets can be difficult with rubber feet.