To choose a hiking backpack for trekking, decide first what you will carry, then pick the capacity, then fit the pack to your torso length and hips. A pack that fits well carries most of its weight on your hips, not your shoulders. For a teahouse trek in Nepal with a porter, a 25–35 litre daypack is usually enough; without a porter, most people need around 40–55 litres.
This guide covers backpack types, what size you need, how to measure and fit a pack, the features worth paying for and the ones you can skip, plus specific advice for trekking in Nepal.
Quick answer: what backpack do you need?
| Type of trip | Typical capacity | Notes |
|---|---|---|
| Day hike | 15–30 L | Water, layers, snacks, first aid |
| Nepal teahouse trek with a porter | 25–35 L daypack | Porter carries your duffel; you carry what you need during the day |
| Nepal teahouse trek without a porter | 40–55 L | No tent or stove, but you carry sleeping bag and all clothing |
| Weekend camping (1–3 nights) | 35–50 L | Depends on how compact your shelter and sleeping kit are |
| Multi-day camping (3–5 nights) | 50–70 L | The most versatile range for backpacking |
| Extended or winter trips (5+ nights) | 65 L and above | Bulkier warm kit and more food |
Step 1: work out what you will actually carry
Capacity follows your kit, not the other way round. Before you shop, lay out everything you plan to carry and be honest about it. A small, modern sleeping bag and lightweight layers need far less space than older, bulkier kit.
The biggest factors are:
- Accommodation. Lodges and teahouses mean no tent, stove or cooking kit. Camping adds a lot of volume.
- Support. If a porter or pack animal carries your main bag, you only need a daypack.
- Season and altitude. Warm layers for high altitude or winter take up much more room.
- Water and food. On remote routes you may carry more of both.
Our free trek packing checklist and the Everest Base Camp packing list are useful for this step.
Step 2: choose the right type of backpack
| Type | Typical size | Best for | Key traits |
|---|---|---|---|
| Daypack | 15–35 L | Day hikes; supported treks where a porter carries your main bag | Light, simple, often a light frame or framesheet, mesh or padded back |
| Trekking / backpacking pack | 40–70 L | Multi-day hikes, teahouse treks without a porter, camping | Internal frame, padded hip belt, adjustable harness, load lifters |
| Expedition pack | 70 L and above | Long, cold or remote trips with heavy loads | Strong frame, thick padding, built for 20 kg or more |
| Alpine / mountaineering pack | 30–50 L | Climbing and mountaineering | Slim, simple, tool and rope attachments, removable parts |
| Travel backpack | 35–60 L | Overland travel, flights, mixing city and trail | Clamshell opening, stowable harness, lockable zips |
Step 3: what size backpack do you need?
Capacity is measured in litres. Different brands measure differently, so treat the number as a guide and compare packs in person when you can. Two rules help:
- Choose the smallest pack that comfortably fits your kit. Extra space tends to get filled, and a bigger pack is heavier.
- Allow a little spare room for food, water and a layer you take off during the day.
Comfortable load is linked to the pack’s frame. Lightweight frameless packs suit loads under about 9–10 kg. Packs with an internal frame and a padded hip belt handle more, and expedition packs are designed for 20 kg and above. Check the maker’s recommended load range.
Step 4: measure your torso and hips
Backpacks are sized by torso length, not by your height. Two people of the same height can need different sizes.
How to measure torso length
- Tilt your head forward and find the prominent bone at the base of your neck. This is the C7 vertebra.
- Place your hands on your hips, with your thumbs pointing to your spine, on the top of your hip bones (the iliac crest).
- Ask a friend to measure along your spine from C7 down to the point between your thumbs. That is your torso length.
Each brand maps torso lengths to its own sizes, so check the size chart for the specific pack. Many trekking packs have an adjustable back system that covers a range of torso lengths, which makes fitting easier.
Hip size
Measure around your hips at the top of the iliac crest, where the hip belt will sit. Most packs come with a hip belt that suits a range of hip sizes for that torso size; some offer interchangeable belts.
Step 5: fit the pack properly
Try packs on loaded, ideally with around 7–9 kg inside, and with all straps loosened first. Then adjust in this order:
- Hip belt. Centre the padded wings on top of your hip bones and tighten firmly. As a rule of thumb, around 80 per cent of the weight should sit on your hips.
- Shoulder straps. Pull them down and back until they wrap your shoulders without gaps. They should not carry most of the weight.
- Load lifters. These small straps run from the top of the shoulder straps to the pack. Tighten them gently, to about a 45-degree angle, to pull the load in towards your back.
- Sternum strap. Fasten it a few centimetres below your collarbones, snug but not tight, so you can breathe freely.
Signs of a good fit: the shoulder straps attach to the pack a few centimetres below the top of your shoulders, the hip belt sits on your hips rather than your waist, and you can walk, step up and lean forward without the pack swaying. Walk around the shop for at least ten minutes, and try steps if you can.
Women’s and shorter-torso packs have narrower, more curved shoulder straps, a differently angled hip belt and shorter torso ranges. Choose whichever fits you best, whatever the label says.
Step 6: frame and back system
| Frame type | Pros | Cons | Best for |
|---|---|---|---|
| Internal frame | Close to the body, stable on uneven ground, good load transfer to hips | Back can get sweaty | Almost all modern trekking packs |
| Suspended mesh back | Excellent ventilation, air gap behind your back | Shifts the load slightly away from you; can reduce space | Warm weather, moderate loads |
| Frameless | Very light | Comfortable only with light, carefully packed loads | Ultralight hiking |
| External frame | Carries awkward heavy loads, very ventilated | Bulky, less stable on rough ground | Specialist use; rarely needed for trekking |
For most Nepal treks, an internal frame or a suspended mesh back is the right choice. The lower, warmer valleys favour ventilation; the higher, colder days favour stability.
Step 7: features worth having
Worth paying for
- A well-padded hip belt with pockets. Pockets keep snacks, sunscreen, lip balm and a phone within reach.
- Adjustable harness and load lifters. They make fit and comfort far easier.
- Stretch side pockets you can reach while wearing the pack, for water bottles.
- A front stretch pocket for a waterproof or wet layer.
- Compression straps to cinch down a part-full pack and stop the load moving.
- Hydration sleeve if you like using a water bladder. Note that bladders can freeze at high altitude, so many trekkers carry insulated bottles as well.
- Rain cover, either built in or bought separately.
- Trekking pole attachments for stowing poles on scrambles. See our guide on how to choose trekking poles.
Nice to have
- Removable lid that converts to a small bag.
- Sleeping bag compartment with a zip at the base.
- Front or side zip access to the main compartment, so you do not have to unpack from the top.
- Lockable zips, useful for travel days.
Usually not needed
- Lots of external straps and loops you will never use.
- Laptop sleeves on a trekking pack.
- Heavy fabrics far beyond what your trip needs.
Materials, weight and durability
Most trekking packs are made from nylon or polyester fabrics, rated in denier (D), a measure of yarn thickness. Higher denier is generally tougher but heavier. Many packs use heavier fabric on the base and lighter fabric elsewhere. Some ultralight packs use laminated fabrics that are highly water-resistant but more expensive.
Pack weight matters, but less than fit. A pack that is a few hundred grams heavier but fits well will feel lighter than a featherweight pack that rides badly. Look for robust stitching at the shoulder strap and hip belt joins, smooth, chunky zips and a reinforced base.
Waterproofing: rain covers and liners
Very few packs are fully waterproof. Fabric may be coated, but water gets in through seams and zips. Use two layers of protection:
- A rain cover to keep the pack itself drier and lighter in rain.
- A waterproof liner or dry bags inside, especially for your sleeping bag, down jacket and electronics.
This is essential if you trek in Nepal during the monsoon, roughly June to September, and still sensible in other seasons. Snow, river spray and dusty jeep rides all reach the inside of a pack.
Choosing a backpack for trekking in Nepal
Most Nepal treks are teahouse treks, where you sleep and eat in lodges. That keeps your load relatively light, but trekking days are long, steep and repeated for one to three weeks.
Trekking with a porter
On a supported trek, a porter carries your main bag, usually a soft duffel, while you carry a daypack. Your trek operator will give you a weight limit for the duffel. Limits vary, so check before you pack and avoid overloading porters. In your daypack, carry:
- Water (two litres or so), purification and snacks
- Waterproof jacket and a warm layer
- Hat, gloves, sunglasses and sunscreen
- First aid kit and personal medication
- Phone, camera, headtorch and some cash
- Permits and documents if you need to show them on the trail
A 25–35 litre daypack with a padded hip belt is ideal. Smaller packs without a hip belt become uncomfortable on long climbs such as the one to Namche Bazaar.
Trekking without a porter
If you carry everything, a 40–55 litre pack with a proper internal frame and hip belt suits most teahouse treks, including the Annapurna Circuit and Langtang. Aim to keep your total load as light as possible; every kilo is felt above 4,000 metres. Our guide on altitude sickness explains why a steady, unhurried pace matters.
Nepal-specific tips
- Domestic flights have strict baggage limits. Small aircraft serving Lukla and other mountain airstrips weigh bags carefully. Check your airline or operator’s current allowance for checked and hand baggage.
- Dust and grit. Trails, jeep roads and villages can be very dusty in the dry season. Keep electronics in sealed bags.
- Theft is uncommon on the trails, but use lockable zips or a small lock on your duffel for flights, buses and hotels.
- Buying in Kathmandu. Thamel has many gear shops selling packs. Quality ranges from genuine imports to copies with weak stitching and buckles. Check seams, zips and the hip belt carefully, or buy and fit your pack at home.
- Test before you fly. Walk several long, hilly days with your loaded pack. Our guide on how to train for Everest Base Camp includes a suitable build-up.
How to pack a trekking backpack
- Bottom: bulky items you will not need until evening, such as your sleeping bag.
- Middle, close to your back: the heaviest items, such as food, water reserve or cooking kit. This keeps the centre of gravity close and stable.
- Top: layers you may need during the day, such as a warm jacket.
- Lid and outer pockets: small essentials: map, snacks, sunscreen, headtorch, first aid.
- Side pockets: water bottles.
- Compress the load with the compression straps and re-check the fit.
How much should you spend?
The most expensive pack is not automatically the most comfortable. Mid-range packs from established outdoor brands often have all the features most trekkers need. Spend your money on fit and a good harness rather than on extra features. Buy from a retailer that lets you try packs on with weight, and check the return policy and warranty.
Care and cleaning
- Empty the pack fully after each trip and shake out grit.
- Hand wash with mild soap and lukewarm water, using a soft brush on dirty areas. Avoid washing machines unless the maker allows it.
- Air dry away from direct heat and strong sun.
- Check buckles, zips and stitching before your next trip.
Conclusion
To choose a backpack for trekking, start with your kit, choose the smallest capacity that fits it, and then fit the pack carefully to your torso and hips. For Nepal, that usually means a comfortable 25–35 litre daypack on a supported trek, or a well-fitted 40–55 litre pack if you are carrying everything yourself. If you are still deciding where to go, our guide to trekking in Nepal is the best place to start.
Frequently asked questions
What size backpack do I need for a multi-day trek?
For teahouse treks without a porter, around 40–55 litres. For camping treks of three to five nights, around 50–70 litres. On a supported trek where a porter carries your main bag, a 25–35 litre daypack is usually enough.
How do I know what backpack size fits my body?
Measure your torso length from the C7 vertebra at the base of your neck to the top of your hip bones, then match it to the brand’s size chart. Packs are sized by torso length, not height.
How should a hiking backpack fit?
The hip belt should sit on top of your hip bones and carry most of the weight, the shoulder straps should wrap your shoulders without gaps, and the pack should not sway as you walk. Adjust the hip belt first, then shoulder straps, load lifters and sternum strap.
Is a 30 litre backpack enough for Everest Base Camp?
Yes, if a porter carries your main bag. A 25–35 litre daypack holds water, layers, snacks and essentials for the day. If you are carrying everything yourself, you will need more like 40–55 litres.
Should I buy a women’s specific backpack?
Women’s packs usually have shorter torso ranges, narrower shoulder straps and differently shaped hip belts. Many women find them more comfortable, but choose whichever pack fits you best.
Do I need a waterproof backpack for trekking?
Few packs are truly waterproof. Use a rain cover outside and a waterproof liner or dry bags inside. This is essential in Nepal’s monsoon season and sensible all year.
Is a hip belt necessary on a daypack?
On long trekking days with water and layers, a padded hip belt makes a noticeable difference by moving weight off your shoulders. For short, light walks, a simple webbing belt is fine.
Can I buy a trekking backpack in Kathmandu?
Yes, Thamel has many outdoor shops. Quality varies widely, so check seams, zips, buckles and the hip belt, and try the pack on with weight. Ideally, buy and test your pack at home before you travel.
