Waterbottle Protector

thingiverse

A Basic Protector for Cylindrical Water Bottles. The diameter is 100mm, so just scale it up to your own bottle's diameter in percent. I've printed it one millimeter less so it stays firmly in place. It doesn't have a hole for releasing the air inside, so when you want to insert the bottle, you need to put some kind of thin wire between the bottle and the protector, and pull it out afterwards.