<human>:  What is the best way to pack a suitcase for a long trip?
<bot>: The best way to pack a suitcase for a long trip is to start by rolling your clothes to save space. Lay items that don't wrinkle, such as t-shirts, in one layer at the bottom of your suitcase. Place heavier items, such as jeans and sweaters, in the center of the suitcase so that the top and bottom layers remain balanced. Place items you may need to access frequently in small bags and put them on top for easy access. Finally, fill any remaining empty space with socks, underwear and other small items.