Five-Panel Cap

Appearance
The Five-Panel Cap is a baseball cap that, aside from a thick black stripe down the center, changes color depending on that of the wearer's Ink (though not to match it exactly), with the brim being slightly darker. On the front, in the middle of the black stripe, there is a tiny version of the Zekko logo, and on both sides of the cap is a fairly small gray button.

Splatoon 3
The Five-Panel Cap can be seen in the Splatoon 3: Expansion Pass trailer. It can be seen being sold in Cooler Heads.

Trivia

 * The Five-Panel Cap exists in real life, sold by KOG.