As always, very nice Paul !!!
Love the HDPE use.
I see the rubber on the inside, from my understanding to protect the phone form water etc. What about the hole for the button? Do you have a membrane or sth similar there?
Another thing that I cannot see is how, and if , the charger could be connected to the phone.
I see that the right side extends longer than the left side. (the phone is eccentric inside the case).
Next thing you know you are building wireless thumb switches for them
This is going to be really really good !!!