Two men wearing Tempesta cooling vest

THE Thermal Confort for all

THE PORTABLE, REVERSIBLE THERMAL VEST

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TETHYS

Workers exposed to extreme conditions : fatigue, errors, stoppages…

Every year, 8.9 million professionals in France suffer the effects of extreme temperatures, causing up to 8,000 in lost productivity per person.

At TETHYS we meet this challenge by placing worker safety, well-being, and performance at the heart of innovation. Our Tempesta system, derived from space and nuclear technologies, is the smallest thermal management system ever designed. It is available as a stand-alone, belt-worn version, or discreetly integrated into PPE, for optimum protection in all conditions.

TEMPESTA VEST

Tempesta

Reversible

Tempesta is capable of both heating and cooling, enabling it to deliver lasting improvements 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 in the metallurgy, construction and energy sectors energy and urban services sectors.

Comfortable

Lightweight and compact, the Tempesta vest can be worn with any type of professional outfit all day long.

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Saved per worker per year

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operational savings

€5 billion/year

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to reduce health and accident costs

€8 billion / year

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increase in productivity

€44 billion/year

Made in Europe

Our vests are designed and manufactured in France and Italy, guaranteeing their quality and durability.

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State-of-the-art technology

Our system is based on microfluidic circuits and built-in Peltier modules, ensuring comfort and lightness for the Tempesta vest.

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A committed company

We assemble in France with our partner YMCA, a player in the social and solidarity economy.

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TESTIMONIALS

SNCF
Environmental Director, TER General Directorate – Innovation
The cooling vest provides highly efficient and rapid cooling while remaining surprisingly lightweight. The batteries deliver excellent autonomy, ensuring confident and uninterrupted use over time. We see strong potential for a number of operational roles.
Eiffage
Agency Director
Our team was convinced by the vest’s potential, to the point of requesting a larger-scale test. We appreciate the quality of the device, the responsiveness of the team, and their commitment to continuous improvement.
GSF
Innovation Department
“…” The results? Very promising! The V2 is even more ergonomic, washable, and now reversible for hot/cold use. “…”

We solve the industry’s biggest problem

By providing productivity through thermal comfort

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