Source's CONVERTUBE + FILTER is a much-appreciated innovation among travelers.

This system transforms all kinds of bottles into a reliable hydration system in three easy steps. With its 3 adapters, the system fits almost any bottle, allowing adventurers to drink healthy water thanks to the integrated filter. What's more, an adjustable tube allows you to drink every last drop.

This system even comes with a piston for easy cleaning and to maintain the system's performance.