Sweat only cools you when it evaporates

Under a work shirt in still air, it just soaks. ZIPPKOOL fixes that.

01 Air comes in
Fans at your lower back pull outside air into the garment. Four speeds, so you set it to the day.

02 Air moves across you
The garment inflates and channels a steady stream up your torso — across your whole back and chest, not one spot.

03 Sweat evaporates, you cool down.
Moving air lifts sweat away as vapor and takes your body heat with it — your own cooling system, finally working at full capacity.

Up to 20 hours of airflow on one charge — a full shift plus overtime. ANSI Class 3 hi-vis and fall-harness compatible, so nothing gets traded away to stay cool.

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Cooling gear built to spec

ANSI-rated cooling garments and the batteries and parts that run them.

How it compares to what's already in the truck

Most crews already carry something for heat. The difference with fan-cooled gear is duration: it doesn't need refreezing, re-wetting, or a cooler on the job site.

How it compares to what's already in the truck
ZIPPKOOL fan-cooledIce / phase-change vestSoak-in-water vestCooling towel
How long it coolsUp to 20 hrs on one chargeHours, not shiftsHours, not shiftsMinutes
To reset itSwap or recharge the batteryRefreeze the packsRe-soakRe-wet
Needs on siteOutlet to charge overnightFreezer or ice coolerWater sourceWater
In high humidityReduced — evaporation slowsUnaffectedReducedReduced
Stays dryYesYesNoNo
Added weightLight, fans and battery onlyHeavy when loadedModerate when wetNegligible
ANSI hi-vis ratedBuilt in, Class 2 or Class 3Worn under or over hi-visRarelyNo
Harness compatibleYes, D-ring passes throughVariesVaries

ZIPPKOOL isn't the right choice for every job. It's not flame-resistant and not intrinsically safe — for welding, hot work, or explosive atmospheres, use FR-rated gear and a non-powered cooling option. In sustained very high humidity, phase-change cooling may outperform evaporative. And fans must be switched off near rotating machinery.

Different work, different heat

Class 2 or Class 3, vest or short-sleeve jacket, one battery or two, what you need depends on the work. Find your trade below.

From the job site

What crews say after a season in it

ZIPPKOOL is new in North America. These are crews who tried it through a full summer.

Warehouse

"The warehouse was large and hard to keep properly cooled, so heat exhaustion was an ongoing concern for us. Candy and sports drinks alone weren't enough. Since switching, workers report noticeably less fatigue and steadier focus through the shift."

Kyosei Kida

TEPCO Logistics

Construction

"No more changing shirts mid-shift anymore. The site used to feel like walking on hot steel with nowhere to escape from the heat. Now the crew loses less energy to sweat, and it's much easier to manage everyone's physical condition."

Toru Sasaki

Obayashi Corporation

Manufacturing

"My team maintains equipment in a semiconductor cleanroom. Machine-adjacent spots stayed hot despite the climate control, and shirts would soak through under our cleansuits. A trial in one room in 2023 changed our minds fast."

Jun Kobayashi

Tohoku Epson Corporation

FAQ

Questions we get from safety managers

The specification and compatibility questions that come up most.

Which class do I need — Class 2 or Class 3?

Class 3 is specified for roadway and other high-risk, traffic-proximate work. Class 2 covers road construction, work zones, warehouses, and general construction. Check the site's written safety plan — it will name the class. HVN-510U is Class 3, HVN-400U is Class 2.

Does it work with a fall-protection harness?

Yes. A rear opening lets the dorsal D-ring pass through to the outside, so a lanyard or SRL attaches normally. Verify D-ring access before working at height. The garment is not part of the fall-arrest system.

Is the battery certified?

LI-PRO1U is ETL Certified by Intertek, an OSHA-recognized NRTL. Both packs are UN 38.3 certified for transport and FCC compliant. ZIPPKOOL batteries are not UL Listed; ETL provides equivalent NRTL recognition.

Can I wear it near welding or in a hazardous atmosphere?

No. ZIPPKOOL garments are not flame-resistant and not intrinsically safe. Do not use near open flame, sparks, welding or cutting, molten metal, or in areas with flammable gases, vapors, or combustible dust.

Can I order for a crew, and do you offer terms?

Yes. Contact us for volume pricing, PO and net terms, and compliance documentation for your approval process.

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Volume pricing, PO and net terms, and complete compliance documentation for your approval process.