I have to admit, I have strong concerns about the one that Bertha is in. When she lies down her back at at this huge angle which cannot be good for her. Imhave a stronger regard for this one.
So if your bunny suffers a back injury for whatever reason, this might be something you want to consider.
Some kid made this one for an injured cottontail.... CUT the sound to avoid the annoying music. it's unneeded to watch the video.
You have to weigh out the pros and cons...some bunnies won't like a restraint... like the one bunny I saw that kept nipping at his harness. And Bertha looked so disheveled in her get up and another I saw that I wondered if was truly good for the bunny.. or if it was just better for the owners feelings.
Consider your animal before you consider your own feelings. THAT is what must be looked at first.