WATERFLY Crossbody Sling Backpack Sling Bag Travel Hiking Chest Bag Daypack

does it stand when you set it down or does it flop over?

Can this fit a 12 inch tablet

Can a child use this bag?

How long is the total length of the strap? I can't believe 40 inches is total length, cause that barely fits over one arm, much less cross body.