CAREWORXMicrofiber Surf Beach Wetsuit Changing Towel Bath Robe with Hood -One Size Fit All (Navy Blue)

How is front attached to back along sides? i see one snap on each side. is that snap the only form of attachment? are there other snaps? a seam?

Is there a strap on the back for hanging?

Is it one size fits all? I'm 5' and 119lbs

would this fit a boy - 100# and 5 feet tall? Thank you!