This is an adapter ring that fits the Yeti can cooler so that a beer bottle can fit and hold correctly (beer bottle used was 'Great Northern")

My final print is in TPU, but my design test prints were done in PETG and the outcome (including fit) was good on these too.

I slowed down my TPU print speed (Bambu lab TPU 95A HF) to 3.6mm3/s, default was 12mm3/s as my first print came out ‘really’ stringy' but the filament was brand new out of the bag and hadn't been put in my dryer yet