What's the difference between a hiking daypack and a commuter backpack?

Hiking-focused packs prioritize a ventilated or contoured back panel, a real hip belt, hydration bladder compatibility, and external attachment points for trekking poles or wet gear. Commuter-leaning packs trade some of that for a padded laptop sleeve, structured organization, and a cleaner profile. Several Osprey models blur the line, which is why reviewers note they work for both roles but aren't the lightest or most ventilated trail option.