GRAYL Geopress Purifier/Water Bottle vs GSI Outdoors Microlite 720 Twist

The GRAYL Geopress Purifier/Water Bottle is an example of a great Backpacking Water Filter at its $75 budget.

In the case of the $27 GSI Outdoors Microlite 720 Twist 24 Oz, however, we weren't able to find enough data to come to any reliable conclusions. If you're considering buying a Backpacking Water Filter in the $30 range, we encourage you to take a look at some other options.

Two highly trusted sources that perform well-thought-out in-depth testing consider the GRAYL Geopress Purifier/Water Bottle to be a great product - it earned the "Best Bottle Press Purifier" title from OutdoorGearLab and "Best filtered water bottle for outdoors" from CNET in their respective Backpacking Water Filter roundups, which is a good indication of it being a notable product.

As for the GSI Outdoors Microlite 720 Twist 24 Oz - OutdoorGearLab, a source that conducts reliable hands-on testing, has featured it in its Best Water Bottle of 2021 roundup. However, it didn't make it to any of the top spots.

We examined all of the review data that we could find and first took a look at sources that reviewed both of them, like OutdoorGearLab, and found that they haven't shown a preference for either product.

Then we checked which sources liked these two Backpacking Water Filters best and found that the GRAYL Geopress Purifier/Water Bottle got its highest, 9.4, review score from reviewers at houseandbeyond.org, whereas the GSI Outdoors Microlite 720 Twist 24 Oz earned its best score of 9 from OutdoorGearLab.