Do the Adventurer and Traveler models mate with the Pre-Filter like the Classic and Journey models do?
No. The Adventurer and Traveler do not mate, or create a water tight seal, with the Pre-Filter like the Classic and Journey models do. You can still use the Pre-Filter with these products though. After pre-filtering, simply remove the pre-filter base from the bottle and treat the water by inserting the pen into the bottle directly.