These vintage style bags are a bit like children's school cases. Satchels are definitely the flavour of the month right now with boxy being the new slouchy.
Japanese school bag with ye oldy worldy plastic moulded handle which i adore.
These backpack straps convert to a longer shoulder strap when they are unhooked letting the user choose between a shoulder bag and a backpack... how very convenient.
I have one a little like this in purple which i like but i have had trouble using it as its so stiff, but i love it all the same.