What is a hiking or technical pack?
Summary
Built for multi-hour carries with significant weight. The key difference from other bags is a real suspension system that moves weight from your shoulders to your hips — without it, long carries become a grind.
The full picture
Hiking packs are engineered around one constraint urban bags ignore: you'll be wearing this for 6–8 hours with significant weight, in conditions that punish poor engineering. The defining features are load transfer (a suspension system that moves weight from shoulders to hips), torso fit (an adjustable harness that positions correctly for your body), and ventilation (a gap between your back and the pack to reduce heat buildup). These aren't nice-to-haves for long carries — they're the difference between arriving with energy and arriving depleted.
Signs you're looking at one
Not for you if…
Your carries are under 2 hours or under 15 lbs. The added structure and weight of a full suspension system isn't justified — a well-made commuter pack serves you better.