Colin FosterBy Colin Foster

Updated November 2026

When you’re shopping, the most useful thing to know about what to look for in hiking backpack options is that fit and trip length matter more than brand or features. This guide walks through the factors that decide whether a pack carries comfortably for miles, and gives you a checklist to match a pack to the trips you actually take.

Start With Trip Length and Volume

Pack volume is measured in liters, and it should follow your trip length and the gear you carry. For day hikes, most people are well served by 20 to 30 liters. Overnight trips usually call for 35 to 50 liters, and trips of three to seven days often need 50 to 65 liters, depending on how much food and water you carry. A pack that is too large tempts you to overpack, which adds weight you feel on every climb.

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Get the Fit Right Before Anything Else

Fit determines comfort more than any other feature. Measure your torso length from the bony bump at the base of your neck down to the top of your hip bones, then choose a pack whose torso range matches that number. Most packs with adjustable suspension list a torso range in their specifications, so check it before you try one on.

Load the pack with about 15 to 20 pounds of weight when you test it in a store. Tighten the hip belt so it rests on your hip bones, not your waist, and confirm that roughly 80 percent of the load rides on your hips. Shoulder straps should hug your upper back without gapping, and the sternum strap should sit across your chest without pinching.

Compare Frame Type and Load Rating

The frame shapes how the load transfers to your body. Lightweight packs often use a flexible frame sheet or none at all, which works well for loads under about 20 pounds. Heavier loads benefit from an internal frame that holds its shape and distributes weight to the hips. Some manufacturers publish a recommended load limit; if the pack’s stated limit is well below what you expect to carry, choose a sturdier model.

Check Weather Protection and Access

Most hiking packs are water-resistant rather than waterproof. A rain cover helps in wet conditions, and a pack liner or dry bags protect sleeping gear and electronics. Look for side and lid pockets you can reach while walking, plus a hip belt pocket for snacks or a phone. Top-loading packs are simple and durable, while panel-loading designs with a front zipper make it easier to reach items at the bottom without unpacking everything.

Weigh the Pack Itself

Pack weight adds directly to your base weight. Ultralight designs often weigh well under two pounds, while sturdier packs built for heavy loads can weigh several times that. Decide whether you want a lighter pack that suits lean loads or a heavier one that handles bulk and weight with less strain.

Quick Checklist

  1. Match volume in liters to your typical trip length.
  2. Confirm the torso length range fits your measurement.
  3. Test the hip belt and shoulder straps with a loaded weight.
  4. Check the frame type against your usual load.
  5. Look for rain protection and reachable pockets.
  6. Compare pack weight against your overall base weight goal.

Common Mistakes

  • Buying by volume alone and ignoring torso fit.
  • Choosing a pack that is far larger than your normal trips need.
  • Testing an empty pack in a store, which hides fit problems.
  • Assuming “water-resistant” means the pack keeps gear dry in heavy rain.
  • Overlooking the hip belt, which carries most of the load.

FAQ

What size hiking backpack do I need for a weekend trip?

Most weekend trips fit comfortably in a pack between 35 and 50 liters. Choose the lower end if you travel light and the higher end if you carry bulkier gear or extra water.

How do I know if a hiking backpack fits me?

Measure your torso length and match it to the pack’s torso range. Then load it with 15 to 20 pounds and check that the hip belt sits on your hip bones and the shoulder straps don’t gap.

Is a frame necessary in a hiking backpack?

A frame is not always necessary. Light loads can ride in a frameless or lightly framed pack, but heavier loads benefit from a frame that transfers weight to your hips.

Conclusion

The best hiking pack balances volume, fit, frame support and weather protection for the trips you take most often. Start with your trip length and torso measurement, then test a loaded pack before you commit. A careful fit check now saves discomfort on every trail that follows.

Ready to choose one?

Colin Foster

About Colin Foster

Colin Foster is part of our editorial team and reviews and edits our backpacks & packing systems guides, checking product details against manufacturer specifications and owner feedback.