Core Body Temperature Strap Holster

After my third Core Body Temperature (v1) sensor broke, I decided instead of working with Core for a third replacement, I would design a holster that would work even with a broken Core. It took 18 iterations before I got a design working, and I'm sure it can be refined further, but this one finally suits my needs.

Attach your Core sensor to your HR strap like normal. Create some slack in the strap so that there is a loop above sensor. Slide the new holster between the HR strap and the Core and remove the slack from the HR strap. The holster clips sturdily to the Core and prevents the HR strap from sliding up or down on the Core.