This product was delivered by Amazon two days earlier that estimated.
On receipt, I took them out of the "cool" (I mean cute) cardboard box. I filled the two moulds with water through the small hole in the top (not quite to the top to leave some room for the water expanding while freezing. I then sat the spheres in the freezer).
An hour later I took one of the moulds from the freezer and opened it at the centre (much easier than I imagined it would be). I popped the ice ball into a jug of orange juice and watched it melt slowly.
Simple to use, and does the job remarkably well. This is a super addition to our kitchen. I'll try putting fruit in it next time.
I just love products that are simple, functional, and easy to use. So I'm delighted with these ice ball moulds. Thank you denara denara!