Bicycle Water Bottle Adapter for disposable 16.9oz/500ml bottles

I got tired of washing conventional waterbottles and found myself pouring bottled water into water bottles just to fit the bottle cage on the bike.

This model was printed in PLA and used on my bike for thousands of miles. It acts as a sleeve for 16.9 ounce (500ml) bottles and makes it easy to take bottled water along on a ride.

The 16.9 ounce (500ml) size appears to be a global standard. There are only a hand-full of manufacturers (mostly France and Italy) making high-speed bottling ma