The Marine Corps has announced plans to roll out a universal cap for all Marines, modeled after the cover currently worn by male members, following some controversy over a unisex design. Not only that, it’s tightening its regulations on what exactly can be underneath these brand-new caps.

Specifically, no “faddish” or “exaggerated” hairstyles are allowed, according to a Monday administrative order approved by the Corps’ top general. “Meaning… what, exactly?” asks Gawker’s Adam Weinstein.

We’re not quite sure, so we’ll let you be the judge. The hairdos banned while in uniform include:

LOCKS AND TWISTS (NOT INCLUDING FRENCH ROLLS/TWISTS), HAIR SCULPTING (ECCENTRIC DIRECTIONAL FLOW, TWISTS, TEXTURE OR SPIKING), BUNS OR BRAIDS WITH LOOSE HAIR EXTENDING AT THE END….