Do I need a suitcase or a backpack?

A backpack is essential. Southeast Asian infrastructure often includes gravel roads, uneven sidewalks, and stairs. You will regret dragging a suitcase with wheels.

Should I bring a heavy jacket?

No. Bring one lightweight fleece or windbreaker for overly aggressive air conditioning on buses and trains. That is the only time you will be cold.

Essential Gear for Backpacking Southeast Asia

Focus on a 40-liter pack, lightweight moisture-wicking clothing, and a minimalist approach to toiletries. You need gear that handles high humidity and frequent transit while remaining light enough to carry on planes.

Choose the right pack. Go for a 40-liter travel backpack that opens like a suitcase (clamshell style) rather than a top-loading hiking pack. It must be 22 x 14 x 9 inches to meet international carry-on requirements.
Layer for humidity. Pack only 5-7 days worth of clothing. Stick to synthetic or merino wool fabrics that dry quickly. Avoid cotton, which stays wet and heavy in Southeast Asian humidity.
Manage your electronics. Bring a single universal power adapter with multiple USB ports. A 10,000mAh power bank is essential for long bus rides where outlets aren't available.
Prepare a medical kit. Carry a basic kit with electrolyte packets, Imodium, antiseptic wipes, and blister pads. Most common medications are available in local pharmacies, but keep your essentials in your carry-on.

Do I need a suitcase or a backpack?: A backpack is essential. Southeast Asian infrastructure often includes gravel roads, uneven sidewalks, and stairs. You will regret dragging a suitcase with wheels.
Should I bring a heavy jacket?: No. Bring one lightweight fleece or windbreaker for overly aggressive air conditioning on buses and trains. That is the only time you will be cold.