Mi Band 4 Bracelet Lock

This could be the easiest solution I've ever applied to a problem. My mother always lost her Mi Band because it always got stuck somewhere, the bracelet opened and she didn't notice. This TPU part has fixed the problem in the past few weeks. Worse to share it? We will see. Maybe someone has the same problem, but no idea how to fix it quickly.

Update: 07.10.2020 No problems for the last 3 month. This little thing works like a charm.
Update: The bracelet opened again, Ma didn't notice it and the small clip made sure that the bracelet was not lost. She only noticed it after hours. Conclusion: works perfectly.

Print instructions

Print Settings

Printer Brand: Prusa

Printer: i3 MK3

Rafts: No

Supports: No

Resolution: 0.2mm

Infill: 0%

Filament: Das Filament TPU Schwarz (V1)
Notes:

I used TPU, but I can imagine that PLA / PETG might work too. Not sure how it would feel on the skin.