Summer 2026, limited initial release

Heat stops your crew.
Clema keeps them working.

Full-shift active cooling for industrial crews in 120°F+ heat. No ice. No downtime. No one sent home.

Apply for early access See how it works
8–12hr Full shift, one battery swap
>25°F Felt temperature drop
<3 lbs Worn under PPE
120°F+ Built for extreme heat

What is a battery-powered cooling vest for industrial workers?

ClemaCore is a solid-state, battery-powered cooling vest worn under industrial PPE. It generates cooling electrically instead of carrying a store of cold, so it keeps working for a full shift and does not fade in humidity the way ice, PCM, and evaporative vests do.

How it works Compare vest types See battery-powered options Explore personal cooling devices Run the ROI calculator

The shift

Cool the worker.
Not the building.

A century of cooling was built for rooms.
The work was never inside.

How it works

Cooling that goes where the work goes.

01

Cools the body, not the air.

Active cooling sits against the core and draws heat away the moment it builds. Not dependent on shade, humidity, or environment.

Illustration of heat radiating outward from the chest and core of the body
02

Built into the gear they already wear.

Under 3 lbs. Fits beneath hi-vis, FR, and fall-arrest. A full shift on one battery swap. Nothing extra to carry.

Worker wearing Clema's active cooling system over a t-shirt at a warehouse loading dock

See the full technology →

ClemaCore

The job doesn’t stop at 100°F.

It fits under what they already wear. They’ll forget it’s there.

Apply for early access

Industries

Built for the crews that work in real heat.

Construction

Pours, lifts, and roofing through summer peaks.

Oil & Gas

FR gear, refineries, pipelines, turnarounds.

Utilities

120°F+ field repairs. Storm response. Peak load.

Military

Field operations and training in extreme heat.

Manufacturing

Foundries, steel, glass, hot-work floors.

Logistics

Warehouses, yard ops, last-mile drivers.

The stakes

Every hot day, you’re choosing:
slow the crew, or risk one.

Heat illness is a liability problem under the OSHA heat standard, not a wellness one.

A single heat incident can trigger $50K–$200K+ in liability before litigation even starts.

$50K–$200K+ Single heat-incident cost, before litigation
30–50% Output drop on peak-heat days
36M+ Heat-exposed US workers
Run the ROI calculator Compare vest types →

See Clema on the jobsite.

Built by

A climate strategist and a materials engineer.

Clema was founded in 2025 to bring solid-state cooling to the people who can’t leave the heat.

Meet the team →

In the field

Clema founders with an industrial crew at a customer site visit
On site with crews Designing with the people who actually wear the gear.

Summer 2026, 500-unit first batch

Be the crew that never stops for heat again.

Apply for early access Talk to the team
Apply for early accessTalk to the team