Video guide & overview:
I bought the case and screen protectors (6-in-1) for a combined price of £7.50 (prices may fluctuate)
–Link to Amazon, to the Terrapin 6-in-1 screen protectors
–Link to Amazon, to the case from the Qubits range (with screen protectors)
The space in-between the case and the Digizoid ZO2, is a 3M Dual Lock SJ3540.
Here are pictures of the screen protector and the case:
(Click on the pictures to enlarge them)
I hope this helps!