Here's how you install the single drink holder...aka the Solo, aka the Copilot.
Thread the webbing under the down tube and into the cam buckle. Pull that thing tight. Maybe it's a good idea to go under any cables...unlike in the photo. It's your call.
Now what to do with this extra webbing? If you plan on never using it on another bike with a larger head tube you can cut it off (not really recommended). Or you can fold it under the wrap-around strap like so (keep reading for that step):
Open that cam buckle.
Now close it.
Enjoy riding with a beverage close at hand.
Drink holders now available at Maude Vintage, downtown CoMo.