bldhrt
Netherlands · 2026 · building in public

The gear that keeps you running.

Performance intimates for female runners. Built for km 1 and km 42.

Back us on Kickstarter Join the waitlist
Runner mid-stride on a Dutch road under grey skies
The problem

33% of female runners experience stress urinary incontinence during sport. Nobody talks about it. Nobody built anything for it.

So women shorten the route, skip the race, or stop running altogether. Not because of their fitness. Because of their kit.

33%
of female runners affected
2026
launch year
NL
first market
The gear

A hipster engineered like running kit.

Three layers doing three jobs: a moisture-regulating face, an integrated absorbent core, and a protective barrier against leak-through. Reusable. Developed with a manufacturer in Portugal and tested on real runs.

  • 01Integrated absorption — no liner needed, no bulk
  • 02Flatlock seams — four-needle, chafe-free at distance
  • 03Lightweight 4-way stretch mesh — moisture wicking, low profile
  • 04Bonded leg hem — flat elastic waistband, soft touch

Practical support; not a replacement for pelvic floor therapy. Concept drawings — product in development.

Hand-drawn technical sketches of the performance hipster brief with construction callouts
Elisa sketching garment designs at a table at home
Our story

I went looking for this and it didn't exist.

I'm Elisa. Mother of two, runner, founder of bldhrt. When I started running again after my children, I began losing urine. Mid-training I'd be asking one question: are my clothes staying dry?

I wanted comfortable, reusable underwear made for running. I couldn't find it. So I started developing it myself, alongside my job as product lead at ING and my family.

move with courage.
Live now on Kickstarter

Keep running through every phase of life.

Backing the campaign funds the first production run. You get the hipster before anyone else, and the development stays public the whole way.

Back the campaign kickstarter.com/projects/bldhrt
Reusable. Technical. Made with a manufacturer in Portugal and tested on real runs.
Practical support; not a replacement for pelvic floor therapy.

bldhrt launches in 2026.

Technical, absorbent, performance-grade. Be first to know.

No spam. Just the launch — when it's ready.
You're on the list.
We'll reach out when bldhrt launches. Thank you for believing in this from the start.