How Clema cools.

An active cooling vest works more like a refrigerator than a cooler. A cooler stays cold only until its ice melts; a refrigerator keeps removing heat continuously as long as it has power. Clema is solid-state and battery-powered, so instead of slowly thawing like ice or gel packs, it pulls heat off the body continuously through the shift.

Solid-state active cooling cools using electricity rather than melting ice, evaporating water, or circulating refrigerant. Because nothing is stored that can run out and there's nothing to refill, it delivers steady, repeatable cooling on demand, the way any electric appliance runs consistently whenever it's powered.

Ice and PCM vests hold a fixed amount of cooling and fade as they warm up. Evaporative vests depend on dry air and lose effectiveness in humidity. Active cooling is powered, so it stays consistent from the first minute to the last and performs the same in dry or humid heat. Think continuous air conditioning versus a bag of ice.

No. Clema uses no consumable cooling medium, nothing to freeze, soak, or refill. The cooling is powered electrically and runs on a hot-swappable battery, so a crew resets for the next shift by swapping a battery rather than restocking a freezer.

Yes. Because Clema doesn't rely on evaporation, humidity doesn't reduce its performance. It delivers the same cooling in humid heat as in dry heat, a key advantage over evaporative vests, which weaken as humidity rises.

Clema is lightweight (under 3 lbs) and built as a low-profile suspender system that works with a fall-arrest harness, so cooling stays out of the way of the gear a crew already wears.

Both terms describe it accurately. Clema is a wearable cooling device, and specifically a personal cooling system: battery-powered wearable technology that regulates body temperature independent of ambient conditions. It fits the broader category of industrial wearables and connected worker technology, PPE built to actively manage a worker's physical state through a shift, not just protect against a hazard passively.