01 · FITS ANY BATHTUB
MADE FOR YOUR BATHTUB.
No new plumbing. No dedicated basin.
The H3 drops in beside the tub you already own.
02 · 1°C IN ~90 MIN
COLD, ON YOUR SCHEDULE.
Set the temperature in the app.
Come home to a plunge ready to go.
Turn it off when you're done.
03 · LOW MAINTENANCE
RUN 1–2 HRS A DAY.
Unlike always-on plunges, the H3 only works when you need it. Lower bills. Less upkeep.
AWARD WINNING DESIGN
THE FIRST COLD PLUNGE TO WIN
AT CES.
Recognized by TIME's Best Inventions of 2025 and the CES Innovation Awards. Two years of R&D, thousands of hours in the tub.