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ABOUT NAESIA

There is more to every drop.

NAESIA grew from hands-on sensor development and a question: how can sweat measurements help athletes understand fluid and sodium losses during training?

THE VISION

Bring the science closer to the athlete.

Distance, pace and heart rate describe a workout. Sweat measurements add information about fluid and sodium losses, helping athletes compare how their bodies respond across sessions.

Where disciplines meet.

NAESIA combines microfluidics, electrochemical sensing, wearable electronics and data interpretation. The work is about more than collecting signals: the results need to be clear enough to use in training and recovery planning.

Portrait of the NAESIA founder in a bright interior

THE PERSON BEHIND NAESIA

Tom te Velde

Founder, NAESIA

My interest in sensing technology grew during my mechanical engineering studies at Eindhoven University of Technology. Work on microsystems, including an earlier project developing a compact creatinine sensor, showed me how small devices could make difficult measurements more accessible. I enjoyed taking an idea from a design into something I could build and test.

That interest led me to sweat sensing through the B-Sweaty student concept. Our team received the Grand Prize at the TU/e Contest 2025. The experience highlighted both the engineering challenges and the need to understand what athletes would actually use. I decided to continue developing sweat sensing independently through NAESIA.

Today, I work hands-on with microfluidics, electrochemical sensors and wearable electronics, moving between cartridge fabrication, electrode experiments and prototypes on the wrist. My ambition is to help endurance athletes understand their estimated fluid and sodium losses, compare sessions and make better-informed plans for training and recovery. NAESIA is still in development, with a focus on turning the sensing technology into a practical wearable system.

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HANDS-ON DEVELOPMENT

A considered approach to every detail.

NAESIA is being developed through experiments in microfluidics, electrochemical sensing and wearable electronics. Fabricating cartridges, testing electrode structures and evaluating prototypes on the wrist helps turn each design into a more practical wearable system.

EXPLORE NAESIA

Get to know your sweat.

See how the wearable concept could fit into your training.

Discover the ProductExplore Early Access

TRANSPARENCY, BY DESIGN

Privacy & concept

NAESIA is in development. This website presents an intended future product, with simulated app data and session comparisons. Product renders and running imagery illustrate the concept; they are not photographs of current hardware.

The concept assumes successfully validated whole-body estimation models. It does not present current study results, accuracy claims or certifications. Local measurements and model-derived estimates are labelled separately.

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