you should know, there are foam cat ears with a glue side, you can stick on every helmet. if those are not foam or don’t easily come off during an accident, they could act like a lever when they catch something (ground, branch, etc) and hurt your neck more than a helmet without ears would.

I’d stay away. I checked HNJ’s website to see if they’ve tested those helmets with gimmicky ears (they also do horns and batman apparently). They’ve published zero testing for safety, wind resistance, or anything at all related to those ears.

I wouldn’t trust the single most important piece of safety gear to a company like that. Go with a more reputable brand, and take the other commenter’s suggestion to attach foam ears if you really need that aesthetic.

Simply put, it’s just not worth the risk.