Look beyond the one-liter difference
A 24L and a 25L pack may organize the same belongings very differently. Examine the opening and compartment shape, especially if you carry a rigid lunch box or bulky clothing. The explicitly listed frame gives you a concrete construction detail to investigate when comparing the AC Lite with other day-hiking packs.
Evaluate ventilation in context
A breathability claim cannot tell you how the bag will feel on your back in particular conditions. Check the current model's construction and adjustment guidance, then assess it with your usual layers. If you also want office use, verify laptop accommodation separately; the title establishes a hiking daypack, not protected computer storage.
