What will be difficult to find in Thailand?
Bangkok is becoming more sophisticated by the week with new, sleek department stores and more imported goods arriving fast. It can still be difficult to find attractive larger size clothing and underwear but even this is changing. If you have brands that you can't do without then buy them before you come. Don't forget that tailoring and dressmaking is still relatively reasonable here and if you have favourite clothing there is always the option of having items copied. The weather here is hot all of the time with the locals describing the season as: hot, hotter, hot and wet! Wear plenty of cotton clothing but also bring things to cover your shoulders as it can be 'cold' inside air-conditioned offices, shopping malls, the movie theatre etc.
What not to bring
Check with your moving company about items that may be dutiable or forbidden. There are some strange ones on the list including children’s' toys and golf balls, for example!