Backpacks: How to Choose

Buy the pack last, once you know how much stuff you actually have.

Backpacks for outdoor trips
Photo: Vyacheslav Argenberg / CC BY 4.0 · Wikimedia Commons

The most common backpacking mistake is buying the pack first and then filling it. Do it the other way round: assemble your gear, measure the volume it takes, and buy a pack a little smaller than that. A pack that is slightly too small forces good decisions; one that is too big invites you to carry things you will not use.

How to choose

The decisions that actually change the outcome.

  • Volume: 30–45 litres for day hikes, 50–65 for weekend trips, 65–80 for multi-day independent travel.
  • Fit is measured by torso length, not height. Get it measured properly, then adjust the harness.
  • A hip belt should carry about 80% of the weight. If it is not on your hips, the pack does not fit.
  • Panel loading is much easier to live with than top loading, at a small weight penalty.
  • Lid, hip belt pockets and a water bottle pocket: small features that matter every single hour.

What to buy, by use case

Matched to what you will actually do with it.

  • 50 – 65 litre backpacking pack

    Use case: Two to five day trips carrying food, shelter and sleep system

    The workhorse size. Adjustable harness, load-lifter straps and a real hip belt are the features that matter.

    $150 – 300 Check price
  • 30 – 40 litre day pack

    Use case: Day hikes, summit pushes and travel days

    Should be comfortable with 8 kg and stable when you scramble. Look for a hip belt even in this size.

    $70 – 150 Check price
  • Ultralight frameless pack

    Use case: Thru-hiking and fast-and-light trips under 9 kg base weight

    Saves a kilogram or more, but only works once your gear is genuinely light. Uncomfortable above about 11 kg.

    $120 – 280 Check price
  • Travel pack with a full opening

    Use case: Multi-country trips with hostels and flights

    Opens like a suitcase, has a stowable harness and survives being checked in. Less comfortable on long walks.

    $140 – 260 Check price
  • Dry bags and packing cubes

    Use case: Organising any pack

    Turns one large cavern into a system you can operate in the dark and rain. The cheapest real upgrade to any pack.

    $15 – 50 Check price

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Pitfalls to avoid

The expensive ways to get this wrong.

  • Buying on volume rather than torso fit — the harness is the whole thing
  • Buying a pack larger than you need and then filling it because it is there
  • Not adjusting the load lifters and hip belt, then blaming the pack design
  • Carrying the weight on your shoulders instead of your hips
  • Skipping a rain cover or liner and discovering wet gear at the first downpour
  • Choosing features you will never use over a harness that actually fits

Related gear guides

Not sure where to start?

Begin with our 3-day hiking packing list. Most gear and comfort problems are solved before you ever reach the trailhead.

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