Does the A4 folder fit in the Fjällräven Kånken 13 laptop backpack?

I was planning to buy a Fjällräven Kånken laptop 13 "for school and would like to know if a ring binder (either thick or narrow) fits in the pocket or if it is too narrow. According to the website, the backpack is 25 cm wide and ring binders are a few cm wider than that (approx. 28 cm) … But since I don't have any school books and apart from my pencil case and wallet I don't really take anything to school with me, I wonder if it might be enough.

It might just fit, but the backpack may be bulged and / or under tension. Probably looks rather strange