THE NAESIA SYSTEM
Designed to disappear. Built to reveal.
The NAESIA concept combines a replaceable sweat-sensing cartridge, reusable electronics and an app. Wear it during exercise to collect local measurements and explore estimated losses across the session.


01 / THE SENSING CARTRIDGE
Fresh sweat. A fresh sample.
An adhesive inlet collects sweat from a small area of skin. Inside the cartridge, sodium-selective and reference electrodes read the local sample. A serpentine channel guides incoming sweat while a vent lets displaced air escape. Dry contact pads connect the cartridge to the reader.
- Skin adhesive and defined sweat inlet
- Sodium/reference interfaces and separate dry pads
- Serpentine microfluidic channel and air vent
- A fresh cartridge for every measured session

02 / THE REUSABLE READER
Precision, without the bulk.
The reader contains the rechargeable electronics and Bluetooth connection. Spring contacts read sodium and reference signals from the cartridge’s dry pads. Sensors in the reader detect liquid advancing through the nearby channel. Replace the cartridge after a measured session and keep the reader for the next one.
- Reusable electronics and Bluetooth Low Energy
- Spring contacts connect to the cartridge’s dry pads
- Flow sensing stays with the reusable reader
03 / THE COMPANION APP
Your workout. From start to finish.
The app combines local sweat measurements with athlete and workout information to estimate whole-body fluid and sodium losses. Save a session, compare it with earlier workouts and use the results to support training and recovery planning.
Cartridge
Collect & sense
Reader
Process & connect
Smartphone
Model & visualise
Sweat insights
Understand & compare
DESIGNED AROUND YOUR WORKOUT
Before. During. Beyond.
BEFORE
Make it part of your routine.
Fit a new cartridge, attach the reader and connect the app. Add your athlete details and workout information.
DURING
Follow the session.
Train as usual while viewing local sodium concentration and estimated whole-body fluid and sodium losses.
AFTER
Bring context to recovery.
Review estimated losses alongside logged intake to support hydration and electrolyte planning. Save the session, replace the cartridge and recharge the reader when needed.
EXPLORE NAESIA
Get to know your sweat.
See how the wearable concept could fit into your training.