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How to Choose a Backpack for Travel: A Practical Guide

How to choose a backpack for Malaysia trips: size, fit, torso length, hip belts, rain protection and carry-on rules, explained in plain, practical steps.

Picture this. You are standing at the Merang jetty, the boat is bobbing, and the boatman is waving you on. Your bag is heavy, the straps are cutting into your shoulders, and you still have to step over the side without dropping it in the sea. That is the moment you find out if you chose the right backpack.

A good backpack makes the whole trip feel lighter. A bad one turns every walk from the bus stop into a chore. Here is how I would choose one today, step by step.

Start with the trip, not the shop

Before you look at any bag, think about how you will travel. The best pack for a week of island hopping is not the same as the best pack for a month of city hostels.

Ask yourself a few simple questions:

Pick the right size (capacity in litres)

Backpack size is measured in litres. Bigger is not always better, because a big bag tempts you to fill it.

REI, the US outdoor retailer, gives a rough guide for hiking packs: 30–50 litres for a weekend of 1–3 nights, 50–80 litres for 3–5 nights, and 70 litres or more for longer trips. For daypacks, it calls 21–35 litres the “sweet spot” for most hiking and travel use.

For backpacking Malaysia, where you stay in hostels and homestays and do not carry a tent, you can usually go smaller than those hiking numbers. Many travellers here are happy with something in the 35–45 litre range for trips of any length, because you can wash clothes as you go.

Trip style Rough size Good for
Day trips, city walking 15–25L Water, rain jacket, snacks, camera
Weekend or carry-on travel 30–40L Hostels, budget flights, island trips
Long trip with some hiking 40–55L Mixed travel with extra gear
Camping, multi-day treks 55L and up Tent, sleeping bag, cooking kit

I go into much more detail in 30L vs 40L vs 60L: Which Backpack Size Do You Need?.

Check the carry-on limits before you buy

AirAsia allows two pieces of cabin baggage with a combined weight of 7kg. The main bag must be no larger than 56cm x 36cm x 23cm, and the second smaller bag no larger than 40cm x 30cm x 10cm (AirAsia newsroom advisory; the same limits were listed on klia2.info, checked October 2026). Malaysia Airlines economy allows one cabin bag plus one personal item, with a total weight of 7kg, and its overhead bin size is listed as 56cm x 36cm x 23cm (checked October 2026, Malaysia Airlines).

So if you want to skip checked baggage, look for a pack that measures within 56 x 36 x 23cm when packed. Bring a measuring tape to the shop. A soft pack can bulge past the limit when it is full, so a bag with compression straps helps.

Fit matters more than brand

A RM800 pack that does not fit you will hurt more than a cheaper one that does. The most important number is your torso length, not your height.

REI explains how to measure it:

  1. Tilt your head forward and find the bony bump at the base of your neck. This is your C7 vertebra.
  2. Put your hands on your hips, with your thumbs pointing to your back. Find the top of your hip bones (the iliac crest).
  3. Ask a friend to measure from the neck bump down to the imaginary line between your thumbs.

Many packs come in sizes based on this length, and some have an adjustable back so you can fine-tune it.

When you try a pack on in a shop, ask to fill it with some weight. An empty bag always feels comfortable. Walk around the shop for 10 minutes and climb some stairs if you can.

Buying online? Check the return policy first, then load the bag at home with your real kit and wear it around the house for an hour. If it rubs or pulls, send it back before you cut off the tags.

Measuring torso length from the neck to the hip bones to choose a backpack

The hip belt does the heavy lifting

This is the part most first-time buyers skip. REI says that 80 percent or more of a backpack’s weight should be supported by your hips, not your shoulders. Your legs and hips are much stronger than your shoulders, so let them do the work.

Look for these things:

For a small daypack under 20 litres, a thin strap or no belt is fine. For anything you will carry with all your clothes inside, a proper hip belt is a must.

Padded shoulder straps and a chest strap

The shoulder straps should be padded, wide enough not to dig in, and shaped to your body. Women-specific packs often have narrower, more curved straps and shorter torso sizes, which many women find more comfortable.

A chest strap (also called a sternum strap) clips across your chest. It stops the shoulder straps sliding outwards and keeps the bag steady when you walk fast to catch a bus.

On bigger packs, look for load lifters. These are small straps at the top of the shoulder straps that pull the bag closer to your back. I explain how to set all of these in How to Wear a Backpack the Right Way (and the Mistakes to Stop Making).

Frame or no frame?

Most travel and hiking packs today have an internal frame. This is a light sheet or rods hidden in the back panel. It helps the bag keep its shape and moves the weight to your hips.

Frameless packs are lighter but less comfortable when heavy, so they suit small loads. External frame packs are not needed for travel in Malaysia. My rule: if you carry more than a day’s worth of stuff, get a frame.

Think about the back panel in our heat

Malaysia is hot and humid all year. A bag pressed flat against your back will soak your shirt in minutes, even on a short walk from the LRT.

Look for a back panel with mesh, foam channels or a “suspended mesh” gap that lets air move. It is not magic, but it helps.

Water resistance and rain protection

If you travel during the Northeast Monsoon, you will get wet. MetMalaysia says this monsoon runs from November to March and brings heavy rain, especially to the east coast states of Peninsular Malaysia, west Sarawak and east Sabah. Even outside monsoon season, afternoon storms are common.

What to look for:

Even with a cover, pack anything important (passport, phone, power bank) in a zip bag or dry bag inside. No backpack is fully waterproof at the seams and zips.

How it opens: top-loading vs clamshell

Top-loading bags open from the top, like a sack. They are common on hiking packs and are simple and strong. The downside is that your shirt at the bottom means unpacking everything.

Clamshell or panel-loading bags open all the way round, like a suitcase. In REI’s travel pack reviews, one clamshell bag is praised for giving easy access to “every nook and cranny”. For hostels and homestays, where you pack and unpack every couple of days, this style is much easier.

Compartments and pockets

You do not need 20 pockets, but a few well-placed ones help:

Lockable zips and security

Bag security matters in crowded places like night markets and bus terminals. Look for zips with two pulls that can be clipped or locked together. Some travel packs have zips that tuck into a hidden channel, which makes them harder to open while you walk. A small combination lock is cheap and handy for hostel lockers too.

You may see “TSA locks” advertised. These are designed for US airport security, so you only really need one if you are flying to or through the United States.

Weight of the empty bag

With a 7kg cabin limit, a heavy empty bag eats into your allowance before you pack a single shirt. Check the weight on the label.

A quick checklist before paying

Clamshell travel backpack open on a hostel bed in Malaysia

Common first-time mistakes to avoid:

If you are still unsure what style suits your plans, read Types of Backpacks: Which One Suits Your Kind of Trip?. Then go to a shop, put some weight in the bag, and walk around for 10 minutes before you pay. Your shoulders will thank you at the next ferry jetty.

Sources
  • REI, “How to Choose a Backpack: Sizing & Fit Guide”: https://www.rei.com/learn/expert-advice/backpack.html
  • REI, “Backpacks: Fit & Torso Size Guide”: https://www.rei.com/learn/expert-advice/backpacks-adjusting-fit.html
  • REI, “Daypacks: How to Choose”: https://www.rei.com/learn/expert-advice/daypack.html
  • REI, “The 7 Best Travel Backpacks of 2026”: https://www.rei.com/learn/expert-advice/best-travel-backpacks.html
  • AirAsia Newsroom, “AirAsia Travel Advisory: Cabin Baggage Allowance Update”: https://newsroom.airasia.com/news/2020/7/6/airasia-travel-advisory-cabin-baggage-allowance-update
  • klia2.info, “Baggage Information for AirAsia Flights”: https://www.klia2.info/airlines/airasia-baggage-info/
  • Malaysia Airlines, “Carry-On & Cabin Baggage Rules”: https://www.malaysiaairlines.com/hq/en/travel-info/baggage/cabin-baggage.html
  • MetMalaysia, “Weather Phenomena”: https://www.met.gov.my/en/pendidikan/fenomena-cuaca/

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