I couldn't find a decent cover for a Gillette Mach 3 razor. All of them slid on and in a gym bag would slide right back off again. This one snaps on from both sides and stays on nicely without extra rubber bands/tape/or any other such holders.
Printed at 30% infill without any supports in PETG and it bends perfectly to unsnap.
The author marked this model as their own original creation. Imported from Thingiverse.