What it is: Slip pad to hold phone in place
What it’s made from: Adhesive polyurethane resin
How to use it: The pad is glued in place on the inner side of the flap.
What it’s good for: It prevents the phone from moving or sliding out of the viewer when it’s being used and including the instructions on how to assemble the viewer without compromising your outside print.
There is an option to have this without the instructions as well.