Hangloop/attachment upgrade for drinking bottles (TPU)

TPU "hangloop" / attachment piece for drinking bottles. Good for adding an attachment mechanism to bottles that do not provide any hooks/loops off the shelf.

The bottleneck side of this model is 27mm inner diameter, but it's very easy to scale bigger or smaller. 

Print with as many perimeters as is needed to fill the whole model. This will make the piece very strong.

I printed this with NinjaFlex TPU and can recommend it, or other similar very flexible and strong TPU materials.

I had the attachment piece in daily use during my mountain hiking trip in Norway and never had an issue with it. I used it with a 450ml Rukka soft water bottle and attached it to my belt/backpack with one of these carabiners.