Button the collar of your polo and pull the collar so it's folded down neatly before putting the polo-shirt face down on a flat surface
Grip the shoulder seam in one hand and with the other take the corresponding sleeve and fold it into the middle of the shirt so that the fold makes a perpendicular line from the shoulder seam to the bottom of the shirt. Fold the shirt sleeve in half
Repeat with the other side of the polo shirt. Smooth out wrinkles as you fold
Take hold of the bottom right and left sides of the folded shirt. Bring the bottom edge of the shirt up to the bottom of the sleeves. This divides the shirt into thirds.
Bring the folded edge to the top edge of the collar. Turn the shirt over and put in your suitcase
To preserve polo-shirt collar shape, you can tuck other items such as clean socks, underwear or swimming togs into the neckline to hold the neck it its rounded shape.