What style is your previous cage? One of the most common and comfortable is the cobra style cage which is similar to the ones in your post. Here is me in a cobra style cage.
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It works well and also allows urination without much trouble. I also find this caged bird type device to be very comfortable but it requires seated urination because you are almost guaranteed to sprinkle while locked in this cage.
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You asked about a soft device and I have this birdlocked style device which is comfortable and works well when nature calls. It is a little awkward to put on and a little bulky to wear though.
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