backpack for highschool and easy hikes

[u/matej_pepin]

Hi. I need a backpack for school thact could also be used for lights hikes and traveling. i have a 32 L osprey for the outdoors so i would prefer something smaller. I don't own a labtop yet but i plan buying some in the future. I want to have a outside compartment/bungee for dirty clothes, and a sternum and idealy a hip strap. I'm not really a organised person so i don't need a lot of compartments. i've looked at fjalraven skule 20 L is it goodor is there something better/cheeper. Thanks for help