Fasten the snaps on the left and right sides of the back, and leave the bottom four snaps on the front open so as not to restrict your baby's movements.
The skirt-like shape makes it easy to change diapers, and is a recommended way to wear it for newborns.

The fourth snap from the bottom has a different color as a marker.

Please fasten the front and back snaps to separate the right and left legs.
This way of wearing the diaper covers the tummy without coming undone, so it is recommended once your baby starts moving their legs actively, or when you are carrying them or going out with them.