When you travel, packing light is important.
Heres a trick to tightly packing your long sleeve shirts without wrinkling them too much.
Then fold the collar upwards.
Fold the sleeves diagonally across the front of the shirt in an X shape.
Tightly roll downwards, starting at the collar.
Use the few folded inches at the bottom of the shirt to hold the roll together.
How to Pack Clothes for Traveling| YouTube