There are official studies made by popular scientists from all over the world that state the fact that between a guy and whatever he wears on his head usually appears a non-sexual love story. Being a guy myself helps me relate very much to that.
But when you have a cap and you trust it to cover what many people call the 8th wonder of the world (getting it's name from the Great Pyramid of Giza: "The Great Hairamyd of Reus") in many key moments during your life, it means that cap is very special.
Keeping that hair safe is not an easy job at all and it requests a lot of responsibility, but this cap is doing it briliantly. And as long as Marco's Hair is safe, our world is safe, zombies, aliens, even earthquakes, are all kept at distance.
Kevin
Marco and cap
Auba
The Abbey Road, BVB edition