Print in place binoculars lens cover 50mm (PETG - No flexible filament required)

Print in place lens cover for Vanguard ED 10x50 binoculars. 
Should probably work with other ~50mm binoculars. 
No flexible filament required.
Print with PETG (tested with Prusa PETG) and use at least 5 perimeters to keep the hinge robust. PETG is flexible enough to work as a reliable hinge. 
Make sure you print it with 0.3mm layer height for best hinge results.
Should be printed in place without supports.