These are Neatzit,
a tzitzit undershirt. In dealing with a child who fidgets and therefore picks at the tzitzit, such that at the end of the day, they are entirely undone, can I tuck the tzitzit into the corner fabric squares? These squares are already partly open, to facilitate tucking the tzitzit in when going through the washing machine / dryer.
On the one hand, people do regularly tuck their tzitzit into their pants. On the other hand, when people do that, the garment stands by itself as a garment with hanging tzitzit. It is just that the tzitzit are not visible because of this other entity in the way. But here, with the tzitzit tucked in to the pocket squares, would they lose the status of tzitzit?