The Complete SE Asia Packing List – What Actually Fits in a 40L Carry-On

After 50+ trips to Thailand, Vietnam, Cambodia, Laos, Indonesia, and the Philippines, this is what stays in the bag, what was removed after the first trip, and why the traveller who checks luggage for Southeast Asia is making their life harder rather than easier.


Reading time: 10 minutes | Last updated: 2026


Southeast Asia has a specific packing logic that differs from Europe or South America. The climate is hot and humid (28-38°C throughout, with afternoon downpours June-October in most countries). Laundry is available at almost every guesthouse and hotel from £1-3 per bag. The shopping is excellent and inexpensive — you will buy things in Thailand or Vietnam that don’t fit in your bag, and you will need space for them.

The correct SE Asia luggage: one 40-litre carry-on pack. Everything else is a mistake you will correct on the second trip.

This list is built for a 14-21 day SE Asia trip. It assumes laundry access every 4-5 days (available at almost every accommodation from £1-3 per bag).


The Philosophy

Three rules that override everything:

  1. If it can be bought in Bangkok for less than you paid at home, don’t bring it from home.
  2. If you haven’t worn it in the past month, you won’t wear it in SE Asia.
  3. The weight you carry is the weight you carry up every staircase, onto every bus, and through every 35°C afternoon.

The traveller who packs correctly weighs 6-8kg including the pack. The traveller who packs incorrectly weighs 15kg and pays for it daily in physical effort and checked luggage fees.


The Full Packing List

The Bag

The main bag: The Osprey Farpoint 40 (£130-150) or the Tortuga Setout 40 (£145-165) — both fit in airline overhead compartments within the standard dimensions (55cm × 40cm × 23cm for most airlines). The Osprey Farpoint is the standard recommendation for its suspended back panel and hip belt. The Tortuga Setout is better if you want the luggage-style opening (the zip around the front, the bag lying flat) rather than the top-loading backpack format.

The day bag: The Osprey Daylite Plus (15L, £45) or the Tortuga Setout Packable (£35) — packs flat into the main bag, unpacks to a usable daypack for city exploring, market days, and day trips. Essential for SE Asia where you need a smaller bag for the day but don’t want to carry the full 40L.


Clothing

The SE Asia clothing principle: fewer items than you think, quicker-drying than cotton, darker colours than you’d choose in Europe (the dust, the tuk-tuk exhaust, and the occasional rain stain are inevitable).

ItemQuantitySpecific RecommendationNotes
Lightweight trousers (zip-off)1REI Sahara Convertible or Patagonia QuandaryZip-off converts to shorts. Covers knees for temple entry. One item, two functions.
Shorts1Any lightweight travel shortFor beach, casual evenings, the 38°C days
T-shirts (merino wool or synthetic)3Icebreaker Tech Lite (merino) or Patagonia Capilene CoolMerino doesn’t smell. 3 shirts = 7-10 days between washes.
Long-sleeve lightweight (merino or synthetic)1Icebreaker 150 long sleeveFor air conditioning (buses, restaurants), temple dress codes, sun protection
Light packable down jacket1Uniqlo Ultra Light Down (£49)Ridiculous as it sounds in SE Asia, the overnight bus AC is at 16°C. Packs to fist size.
Swimwear (doubles as shorts)1Any 2-in-1 swim trunkThe beach is the reason for half the itinerary
Underwear (merino or synthetic)3-4ExOfficio Give-N-Go or merinoQuick-dry is the entire point
Socks (merino or synthetic)2-3 pairsDarn Tough or SmartwoolFor the bus journeys, the air-conditioned restaurants, the rare cold morning
Rain jacket1Patagonia Torrentshell or Mountain Warehouse equivalentPacks to 1L. The rainy season downpour is daily and brief.

What not to bring:

  • Smart shoes (you will not need them, they weigh 800g each)
  • More than 3 t-shirts (laundry is £1 per bag)
  • Jeans (they take 48 hours to dry, weigh 600g, and serve no function that lightweight trousers don’t serve better)
  • Towel from home (the guesthouses provide them, and if not, buy the £3 sarong that serves the same function)

Footwear

ItemSpecific RecommendationNotes
Main shoesAllbirds Wool Runners, Salomon XA Pro 3D, or On Running CloudComfortable for walking 15km+ city days. Light. On feet during travel, not in the bag.
Flip flopsReef Fanning or HavaianasBeach, guesthouse showers, temple sandal zones. Roll into a sock for packing.

Two pairs only. Always.


Toiletries

The SE Asia toiletries approach: the 100ml liquid limit applies to carry-on. The solid toiletries approach eliminates the liquid bag entirely.

ItemSpecific ProductNotes
ShampooEthique or HiBAR solid barLasts 60-80 washes. No liquid restriction. No leak risk.
ConditionerEthique solid conditionerSame logic
SoapEthique or Lush solidOr buy locally (the Thai 7-Eleven has everything)
DeodorantSolid stick (not aerosol)No weight, no restriction
Sunscreen100ml tube or powderThe SE Asia UV at altitude (Chiang Mai, Sapa) is severe. Buy locally if running out.
Insect repellent100ml DEET-basedThe malaria zones are real. See the health section.
ToothpasteHuppy tablets or standard 100mlThe tablets eliminate the tube entirely
Microfibre towelSea to Summit Airlite (75g)For guesthouses that don’t provide, beach days, the overnight bus

Electronics

ItemSpecific ProductNotes
PhoneYour current phoneThe GPS, the camera, the booking app, the translation tool
Universal adaptorTESSAN compact (£12)Covers all SE Asia socket types (Type A, C, and G) in one cube
Power bankAnker PowerCore 10000 (£25-35)2.5 phone charges. Fits in a jeans pocket. Non-negotiable in SE Asia where you navigate by phone.
USB-C cable (1m)Any quality USB-CCharges the phone, the power bank, most modern laptops
EarbudsAirPods or equivalentFor the 12-hour overnight bus journeys that constitute SE Asia overland travel
HeadtorchBlack Diamond Spot (£35)Cave temples, overnight trekking, accommodation with unreliable power

What not to bring:

  • A laptop (unless working remotely — the phone does everything a laptop does for the tourist)
  • A camera (the current iPhone/Android camera quality exceeds a compact camera for travel photography; bring a mirrorless only if photography is the specific trip purpose)
  • A travel router (unnecessary in SE Asia where fast wifi is ubiquitous)

Health and Medications

This section is the most important part of the SE Asia packing list. The items most likely to save the trip are not the camera or the rain jacket.

ItemNotes
Prescription medicationsIn original packaging. Enough for the full trip plus 7 days buffer.
Malaria prophylaxisFor: Cambodia, Laos, rural Vietnam, parts of Thailand (the border areas), and the Indonesian outer islands. Not required for: Bangkok, Chiang Mai, Bali, Hanoi, Ho Chi Minh City. Consult a travel clinic 4-6 weeks before departure — the correct medication depends on the specific destination.
Imodium (loperamide)For transit emergencies only — the 8-hour bus journey where stopping is not possible. Not a substitute for letting the illness resolve.
Oral rehydration saltsDioralyte or equivalent. The most important single item in the health section. Traveller’s diarrhoea causes dehydration; dehydration causes the secondary symptoms that make the illness serious. One sachet in water every 2 hours during acute illness.
Antihistamine (cetirizine)For insect reactions, the unfamiliar ingredient, the hay fever that altitude triggers
Paracetamol / IbuprofenThe pharmacies in SE Asia are excellent and inexpensive for anything available over the counter — but having these from home eliminates the pharmacy search at 11pm
Blister plasters (Compeed × 4)The new shoes + 20km walking day combination is universal
Antiseptic wipes × 6For the cut from the temple step, the motorcycle graze, the market surface
SPF 50+ sunscreenThe UV index in SE Asia reaches 12-13 (extreme). Burns in 10-15 minutes on pale UK skin without protection.

The malaria pill timing: Most malaria prophylaxis (doxycycline, Malarone) needs to be started before departure (doxycycline: 1-2 days before; Malarone: 1-2 days before). Book the travel clinic appointment 6-8 weeks before departure to allow for the prescription and the start of the course.


Documents and Admin

ItemNotes
PassportValid for 6+ months beyond your departure date. Check before booking.
Travel insurance documentsThe emergency line number saved in the phone AND on a printed paper stored separately.
Physical backup cardThe secondary credit card (the Starling if Chase is primary) stored in the bag separately from the wallet.
One printed A4 summaryFirst accommodation address, return flight details, travel insurance emergency number, local emergency numbers (Thailand: 1669 for medical; 191 for police).

What to Buy in SE Asia

The items that are better and cheaper in SE Asia than anywhere in the UK:

In Bangkok:

  • Lightweight clothing (the Chatuchak Market — the full packing list replaceable for £30-50)
  • Silk (the Jim Thompson factory outlet, genuine Thai silk at below-London prices)
  • Sunscreen (the Thai 7-Eleven stocks SPF 50 for £2-3)

In Hội An, Vietnam:

  • Made-to-measure clothing (the tailors of Hội An produce remarkably accurate copies of any garment in 24-48 hours — bring photographs and measurements, not the originals)

In Bali:

  • Linen (the Bali linen clothing at the Seminyak boutiques — the same garments sold in London for 4× the price)

In Chiang Mai:

  • Trekking gear (the trekking equipment for the Mae Hong Son Loop and the Doi Inthanon hikes — the quality Chiang Mai gear is adequate for 1-2 trip uses at 30% of the UK price)

The Weight Check

The correct SE Asia carry-on should weigh 6-8kg with everything packed:

CategoryWeight
The bag itself0.8-1.1kg
Clothing (complete list)1.5-2kg
Footwear (flip flops, shoes on feet)0.3kg (flip flops only in bag)
Toiletries (solid versions)0.4-0.6kg
Electronics0.8-1kg
Health kit0.3-0.5kg
Documents + wallet0.2-0.3kg
Total4.3-6.5kg

If your bag weighs more than 8kg, something is wrong. Common culprits: the hardback book (use Kindle), the full-size toiletries (go solid), the extra pair of shoes (two pairs only), the “just in case” cardigan (that’s what the packable down is for).


Shortlist

Everything referenced in this guide with the best current UK prices:

Bags:

  • Osprey Farpoint 40: osprey.com or Cotswold Outdoor
  • Tortuga Setout 40: tortugabackpacks.com

Clothing:

  • Icebreaker Tech Lite merino t-shirt: icebreaker.com or Cotswold Outdoor
  • Patagonia Torrentshell rain jacket: patagonia.com
  • REI Sahara Convertible trousers: uk.rei.com
  • Uniqlo Ultra Light Down jacket: uniqlo.com/uk

Toiletries:

  • Ethique solid shampoo bar: ethique.com
  • HiBAR solid shampoo: reusablenation.co.uk

Electronics:

  • Anker PowerCore 10000: amazon.co.uk
  • TESSAN universal adaptor: amazon.co.uk
  • Black Diamond Spot headtorch: cotswoldoutdoor.com

Health:

  • Dioralyte oral rehydration sachets: boots.com
  • Compeed blister plasters: boots.com

The Pre-Departure Checklist

72 hours before:

  • ✅ Passport: valid for 6+ months beyond return date
  • ✅ Visas: checked for every country on the itinerary (Thailand: visa-free; Vietnam: e-visa required; Cambodia: visa-on-arrival or e-visa)
  • ✅ Travel insurance: purchased, emergency number saved in phone
  • ✅ Chase UK and Starling: both loaded with credit, both in the bag
  • ✅ Malaria prophylaxis: started (Malarone: 1-2 days before; Doxycycline: 1-2 days before)
  • ✅ Accommodation: first night in each city booked
  • ✅ eSIM: downloaded and activated for Thailand (Airalo Thailand 30-day: £7.50)
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