Is a heavier backpack always less comfortable?

Not necessarily, and this is one of the more counterintuitive points about pack comfort. A heavier pack with a genuinely effective suspension system — a padded, load-transferring hip belt and a properly adjustable back length — can carry the same load far more comfortably than a lighter, more minimal pack without those features, because comfort depends on how weight is distributed, not just how much the empty pack itself weighs.

The extra weight in a comfort-focused pack generally comes from padding and frame structure that’s doing real work — transferring load to the hips, keeping the back panel ventilated, stabilizing the load against swaying. A genuinely minimal, frameless pack saves that weight but puts all the carried load directly on the shoulders with no assistance.

For short carries with light loads, a minimal lightweight pack is comfortable enough that the extra frame weight isn’t worth it. For anything carried a real distance with real weight, the frame and hip belt’s own weight is a worthwhile trade for the comfort they provide.