What are the rubber rings that came with Milo used for?

Each Milo comes with an Action Clip and three different silicon bands for mounting

Each Milo comes with an Action Clip and three different sized (small, medium, large) silicon bands (o-rings) that can be used to mount the Action Clip on diverse types of adventure gear. Below are some examples of how you might use the different sizes:

• Small Band - you can use this to attach the action clip to a small strap on your helmet.
• Medium Band - you can use this to attach to a narrow pack strap.
• Large Band - you can use this to attach to a wide pack strap or goggle band.