The Case itself is designed to perfectly secure the Auvi-Q and hold it within.  You simply have to push the Auvi-Q in until it snaps and you're good to go. Additionally, the case has an AirTag inside which is paired to a phone. There are two uses for this. 

1. The Airtag will ping you or a child's phone should it be left behind. This is done using the Find My iPhone app, and then enabling the "notify when left behind feature"

2. A parent will be able to check that their kid has their Auvi-Q on them. (provided that they enable certain settings beforehand, which are included in the purchase of an Auvi-Track)