Strap keeper for Whoop strap v3

thingiverse

I've got a Whoop fitness tracker that doesn't come with a strap keeper, and when I wear it, the lower part of the strap sticks out, driving me crazy. So, I designed a strap keeper to solve this problem. It's optimized for printing on an FDM printer with a 0.4mm nozzle, which should result in two strong walls that fit snugly around the strap without sliding around. This design can be printed in flexible filament, but I've found that printing it in PETG doesn't cause any issues at all, so flexible material isn't strictly necessary. If you need Fusion 360 files for this simple design, just let me know. However, if you're not able to create something as straightforward from scratch, then modifying this design might be a challenge.