It is convenient that it is transparent for checking urine and for better cleanliness. But if someone prefers it opaque, they can “dress” it externally with an old sock.
As correctly mentioned in another review, first we check the seal and then we use it.
I find it elegant and it really does resemble a real duck, although it is a little small.
I did not try it lying down, only sitting and standing.
If it also stands the test of time, it will be a very good choice for the money.
It needs cleaning immediately, always with non-corrosive materials and ideally a bottle brush used only for this job..

The "duck" of the following story was replaced with the correct one, as shown in the photo, which works perfectly!
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A comedic yet instructive adventure! (early February 2023)
I received my beautiful duck yesterday. I placed it on the mat of my living room where I sleep, accommodating relatives in my guest bedroom. I was delighted that it would save me from going down the stairs at night, and I felt relieved inside it at 4 in the morning until... I felt moisture on the mat I was stepping on! Leakage?! I grabbed a cloth and wiped the floor-mat until... a suspicious tap tap tap... from underneath! I rushed to the stairs and saw drops of "my production" falling on the TV and the power strip behind it. Oh no!!!... I went back to sleep around 6 am. I hadn't checked the duck before using it and it betrayed me, due to poor sealing of its "seam" at the back.
Moral lesson: check the waterproofing before use!!!
P.S. Its replacement has already been accepted!