This feature is present on the right corner of the search bar in Explore page to make searching for activities easier for the Bloxo users.
Why use this feature?
While searching for activities, filter feature will allow users to view only certain specific activities based on their desired preferences. For example, if you want to view an activity with 'advanced skill level', this feature will allow you to sort your search according to the set skill level.
Bloxo wants to ensure that users have a smooth experience while searching for activities, you can learn how to use this feature here.