Ốp bảo vệ Fitbit ACE LTE

This is a STL for a replacement bumper for my son's Fitbit ACE LTE watch. He likes to take the bumper off and fidget with it on the school bus, so it was only a matter of time before the bumper flew off and got lost. 

The version marked PLA is slightly larger, since PLA doesn't bend as easily and breaks off if he forces it too hard.

The version marked PETG is more snug, and can survive being taken on and off if printed in PETG.

I tried printing it in TPU and it was too flexible and didn't stay on.

The filament used for the photo is LOCYFENS Tri-color Red Yellow Blue, it has three different colors extruded into the same filament at once so it looks different depending on which way you look at it.