The requirement was also for no valleys, and really smooth bond lines, so we had to make the main hopper from one piece. usually we would make something like this from a very soft rubber, but the temperature of the end product required a less-soft neoprene in 6mm thick. This made the bonding process quite tricky, like forcing a square peg into a round hole. But as you can see, our Production Team made a first class job of it.
I hope she remembered to get out before we packed it for shipping to the far east.