Tethys range — flagship product, dual circuit

TEMPESTA

Mastering thermal comfort in extreme conditions.

Tempesta in professional conditions
Tempesta, in real conditions

Eight figures that sum up thermal mastery

15° – 55°C
Adjustable temperature
20 sec
To reach -20°C
3h30 / battery
Up to 8h with hot-swap
1,6 kg
Total weight
< 10 mm
Thickness
50 W
Thermal power
< 50 dB
Noise level
3 sizes
XS-S · M-L · XL-XXL

A concrete and proven technological response

Tempesta is an active thermal regulation solution, derived from space and nuclear technologies. Patented and designed for extreme environments, it outperforms passive approaches like gel vests or thermal fabrics.

Active cooling and heating

Consistent thermal comfort even under extreme conditions.

Temperature control

Real-time adjustment via integrated button.

Two front-mounted batteries

Better balance and easier maintenance.

Discreet and modular design

Fits under any type of workwear.

Responsive after-sales service

Responsible manufacturing in partnership with inclusive actors.

Where others stop, Tempesta delivers a proven, reliable, and truly technological solution.

What sets Tempesta apart

Reversible
Tempesta can both heat and cool, delivering a lasting improvement in thermal comfort even under the most extreme working conditions.
Patented
Tempesta is protected by an international patent filed in 2023, under number WO2024/141723.
Tested and approved
Tested by 35 companies across the metallurgy, construction, energy and urban services sectors.
Comfortable
Lightweight and compact, the Tempesta vest fits with any type of professional outfit throughout the day.

A dual microfluidic circuit, front and rear

Peltiers
Thermoelectric modules that generate heat or cold.
Microfluidic circuit
Circulates water between the modules to spread the temperature.
Pump
Circulates the fluid through both circuits.
Button
Allows real-time temperature adjustment.
Ventilation
Vents hot air to speed up cooling.

Tempesta combines 2 thermo-fluidic circuits (front and rear) with active Peltier modules, to precisely distribute heat or cold to key areas of the body.

Regulatory compliance

Tempesta is currently a prototype in the pre-industrialization phase.

Tempesta is currently undergoing ATEX certification and is not intended for use in explosive atmospheres. For any question regarding the regulatory compliance of Tempesta in your specific working environment, please contact us via the Contact page.

Since July 1st, 2025, decree 2025-482 requires employers to take preventive action from the yellow heat-warning level issued by Météo-France. We have detailed what the text requires, and what it does not.

A question about certification, pricing, or maintenance of Tempesta? See the FAQ

Ready to equip your teams?

On-site demonstration, personalized quote within 48h.