Slim But Not Tight
Ideally, a polo shirt should be slim fitting with fitted sleeves that reach about halfway between the shoulder and the elbow. While it needs to be fitted, you also don’t want it tight. As mentioned, you can if you can slide a finger between the sleeve and your skin with ease you’re on the right track. Any less and it’s too tight, any more room and it’s too loose. The neckline, while unbuttoned should reach just down to the chest area.
At desynme, we are open to your opinion and suggestions.