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Red lettering: “STAY” written vertically on the left, next to “STRONG. WARM. YOU.” in a bold vintage typeface, on a transparent background.
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Join the Heatflow community

Period underwear with an integrated heating pad — for pain-free days.

Sign up now so you don’t miss the production launch!

Product preview

​Here’s a preview of our upcoming product range.

About us

​HeatFlow is a young startup from Salzburg developing high-quality period underwear with integrated heating technology.
Production is about to begin — bringing an everyday solution for natural comfort and reliable protection to life.

Black period slipf on a light background, next to it a glowing orange heating pad; an arrow indicates insertion and replacement.

Our commitment goes beyond the product itself. With our innovative Take-Back & Refresh Service, we extend the lifespan of your HeatFlow underwear — helping to reduce waste and protect the environment.

Discover the future of sustainable period underwear with HeatFlow.

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