More room has a carrying cost
A 34-liter capacity can accommodate a more varied packing list, but the extra space also makes it easy to bring unnecessary items. Plan around the heaviest normal school day and consider whether the bag can be packed without placing dense books far from your back. The title supplies no load limit or measured empty weight to settle that question.
Compare the organization, too
The laptop sleeve is the only internal feature established by this exact title. Do not transfer a two-compartment claim from a differently worded Cool listing without checking the current page. If you are choosing between the Cool 34L and Big 34L, compare their actual openings and pocket maps; their listed capacity and device-size claims alone do not explain the difference.
