The default vive ultimate tracker mounts and straps are bulky, can twist, and shakes due to being far from the limb it's mounted on. I came up with a basic and effective solution to mount the tracker directly to the strap without the heavy and thick middle man.

I made 5cm and 4cm versions. I wouldn't reccomend 3cm due to how large and heavy the tracker is.

PLA is fine. Use tree supports and set it on your printer so that you can remove them easily.

Should be printed on side to avoid the mount hook snapping due to layer adhesion.