A small to medium-sized day pack is really best for the trip, with a waterproof cover to protect it from dust and mud. If you’re not using a support vehicle your bag will carried with you all the time, so try to keep things as compact and light as you can. You won’t need to bring too many clothes with you-a set of clothes for riding and a few changes for evenings or around town is plenty. Laundry is cheap and quick so you can get your things cleaned along the way (if you’re going to be based around one town for a couple of days). Save a little space for a hammock & mosquito net if you’ll be camping out (we’ll provide those). A 3 litre CamelBak or similar is perfect for staying hydrated on the road and carrying personal items, and most of our riders use these. We are happy to look after any other luggage for you in Phnom Penh free of charge while you are on the road.