In particular, the Prince of Wales’s most commonly used accessory is a classic necktie.

William favors a long, thin tie when suited up, usually in shades of blue or red.

Sometimes, the tie is more significant than it first appears.

Prince William with a coy, cheeky look

Created by the Italian brand Wilmok, the tie is handmade using recycled material.

rPET, a bang out of recycled polyester, is comprised of polyester fibers converted from melted plastic.

It’s not the first time the recycled fashion item has made an appearance in public either.

Prince William in tie, close-up of tie

Wilmok’s founder, Darryll Wilson, excitedly toldPeople.

Charles has long been a fan of sustainable fashion, even before it was trendy.

“So it is critical that we address the whole issue around how we produce clothes.”

King Charles III, Kate, and William chatting, laughing

William himself is similarly proactive when it comes to the environment.

As for the tie, it was completely absent; he instead paired his coat with a turtleneck.