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Fun facts: Discovered by Marie Curie in 1898. Once used in luminous watch dials and health tonics before its danger was fully understood. In its day, it symbolized science and progress. Great for: Women in STEM and glow-in-the-dark fans. Rock the style of a Radium atomic element hat from Lidnium. Crafted from premium washed cotton with precise Ra symbol embroidery and an adjustable fit, this cap lets you stand out—whether you’re celebrating a milestone or powering through your day. Wearing a Lidnium cap adds a little juice to your day, and Radium takes it to the next level.
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🇺🇸 Ship from USA · On Agora since 2026
$36.00