Performance Cooling Vest & Wearables
Lower body temperature before and during competition to build a smarter cooling protocol for race day so you can perform longer, stronger, and more consistently in the heat.
THE PROBLEM
Heat Is a Performance Limiter
As endurance intensity and duration builds the body can produce heat faster than it can dissipate it. Rising core temperature accelerates fatigue, reduces sustainable output, and limits performance long before most athletes realize what is happening.
Managing heat is not optional for endurance performance. It is part of the strategy.
See the studies in our Science HubTemperature impacts performance.
Research on endurance events shows performance peaks in cooler conditions. Marathon data reveals that optimal conditions exist around 44F & can differ dramatically from very hot races around 92F.
THE SOLUTION
The CELZEUS Performance Cooling Vest
Lowers core body temperature before competition
Supports the body’s natural cooling processes
Breathable design that allows airflow
Built for pre-race cooling and post-effort recovery
Temperature impacts performance.
Research on endurance events shows performance peaks in cooler conditions. In marathon data, outcomes in cool conditions around 44°F can differ dramatically from very hot races around 92°F.
Why CELZEUS Is Different
Designed Around How the Body Cools
Typical Cooling Vests
- Rely on cold contact alone (conduction)
- Restrict airflow
- Limit evaporation
The CELZEUS Cooling Vest
- Supports multiple cooling mechanisms… four, in fact
- Encourages airflow and sweat evaporation (see convection below)
- Designed around human physiology and the points that cool circulating blood most effectively
The 4 Cooling Mechanisms CELZEUS Uses
Conduction
Something cooler than the body placed against the skin. Our PCM (phase-change-material) cold packs absorb heat and stay cooler longer than ice, providing effective cooling.
Radiation
Allowing the escape of heat from the body via our strategically placed ventilation mesh & air import design.
Evaporation
The drying of moisture, sweat, and humidity on the skin produces a cooling effect.
Convection
Heat removed from the body by moving air or liquid across the skin, carrying warmth away and supporting effective cooling.
Why This Matters
CELZEUS accomplishes athlete cooling via all four mechanisms above. Other pre-cooling vests use only conduction, neglecting the facilitation of radiation, evaporation, and convection.
We customize conduction by chemically altering the PCM melting/freezing-point temperature to match the conditions:
- EXTERNAL Cooling: PCM Cooling-vest with ventilation.
- INTERNAL Cooling: Ingesting cold-slurry liquid to hydrate in cool internal organs.
Designed Around Human Physiology
CELZEUS is designed around human physiology because studies support that the human body has specific points of contact that offer greater, faster, and more effective conduction to cool circulating blood. Examples include:
-
/ 01
Head
-
/ 02
Palms of hands, Wrist, Inner Elbows
-
/ 03
Neck area, Upper-Back
-
/ 04
Core & Torso Organs
These areas can impact core-body temperature most efficiently.
Backed by Research. Explained Like a Coach.
CELZEUS translates published cooling research into practical tools athletes can actually use. We combine scientific understanding with real-world endurance coaching experience so you get clear takeaways, simple protocols, and the “why” behind every recommendation.
- Meta-studies and summaries, with citations
- Short, 30-second breakdown videos
- Practical pre-cooling and race-day protocols