CamelBak All Clear Pre-Filter

Simply snap the pre-filter onto your All Clear purifier bottle (sold separately), fill the bottle with water, remove the pre-filter and screw on the All Clear purifier cap
You're now ready to begin purifying the water with the press of a button on the All Clear purifier cap
Pre-filter keeps the threads of the bottle dry while you submerge it in the water supply so you don't have to worry about the threads holding contaminated water droplets