I wanted a better way to carry and access my Dexcom 7 than dropping it in my pocket. I would always need to access it when sitting or unable to extract it from the pocket. So, I made a belt holster for it so it is easier to get to. I printed it on my Kobra 3 Max because my Kobra X didn't arrive until later in the day. It is printed in PETG which protects it very well but TPU would work very well for it too. You will want to enable supports for a clean print.