About us

About Lidnium

One hat. Infinite combinations. Atomic style.

Lidnium® is the original Atomic Element hat. We take the entire periodic table — all 118 elements — and turn them into bold, brainy, high-quality caps for every kind of mood, moment, or message.

Our hats are embroidered in the U.S. on 100% washed cotton, size-adjustable, and available in three core colors. Choose your favorite element based on how you feel or what you want to say. Rock Titanium when you need to feel strong. Wear Gold for an anniversary. Grab Sodium and Chlorine when you’re feeling salty.

This isn’t geek chic. This is smart style. Whether you’re gifting a chemistry teacher or grabbing a Hydrogen cap just because you’re feeling basic, Lidnium makes it personal — with a little wink from science.