About Clema

We build the cooling vest the people actually wearing PPE asked for.

Clema is a San Francisco company that builds battery-powered active cooling vests for industrial crews working in extreme heat. Our product, ClemaCore, is a sub-3-lb solid-state cooling vest worn under PPE that runs 8 to 12 hours with one battery swap, instead of fading after an hour.

Industrial cooling has been broken for decades. Ice melts in 90 minutes. Evaporative gear fails in humidity. Cooling tents don't move with the crew. We're solving it with solid-state cooling that runs the full shift.

The story

Why Clema exists.

We met where industrial heat became a daily emergency: refinery turnarounds in Houston, construction in Phoenix, warehouses in Memphis. Crews were burning out, literally and operationally. The cooling tools on the market were built for athletes, marathoners, or short medical use, not 8-12 hour shifts under PPE.

So we built Clema: a sub-3-lb solid-state cooling vest that fits under hi-vis, works with a fall-arrest harness, runs 8-12 hours with one battery swap, and works in any humidity. No ice. No water. No logistics tail.

  • Founded2025 in San Francisco, California.
  • MissionActive cooling for industrial crews working through real heat.
  • ProductClema solid-state cooling vest. Summer 2026 first batch.
  • TeamUC Berkeley materials engineer + BCG energy and industrials strategist.
  • HQSan Francisco, CA

The team

Strategy, finance, and materials science. One product.

Anna B. Albright, Co-founder and CEO of Clema

Co-founder & CEO

Anna B. Albright

Anna brings deep strategy and finance experience to industrial heat. At BCG's Energy & Industrials practice, she led work for Fortune 100 energy, industrial, and gov't clients on GTM, risk, and operating model. Prior to BCG: JPMorgan investment banking and macro trading. WEF Global Shaper.

Education: B.A. Yale Environmental Science & Energy Studies

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Clément Messeri, Co-founder and CTO of Clema

Co-founder & CTO

Clément Messeri

Materials engineer from UC Berkeley whose research at Lawrence Berkeley National Lab developed high-temperature ceramic composites for thermal & mechanical performance. At Tyfast: integrated solid-state cooling and fast-charging systems. At E3: built grid-scale thermal and electrical models for industrial use.

Education: M.S. & B.S., U.C. Berkeley Materials Science Engineering and Nuclear Engineering

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What we believe

Three principles that shape every product decision.

1

Built for the shift, not the lab.

If a vest can't survive a full pour, a refinery turnaround, or a non-AC warehouse, it doesn't ship.

2

PPE-first, never PPE-instead.

Clema is worn under the safety gear your crew already wears. It adds cooling to it.

3

Worn or it failed.

The best cooling vest is the one your crew actually puts on. We optimize for adoption, not spec-sheet bragging rights.

Common questions

Clema, in plain terms.

What is Clema?
Clema is a San Francisco company that builds battery-powered active cooling vests for industrial crews working in extreme heat. Its product, ClemaCore, is a sub-3-lb solid-state cooling vest worn under PPE that runs 8 to 12 hours with one battery swap.
What does Clema make?
Clema makes ClemaCore, an active cooling vest. Unlike ice, phase change (PCM), and evaporative vests, which carry a store of cold that runs out, ClemaCore uses solid-state thermoelectric modules to generate cooling electrically for as long as the battery lasts. It delivers a felt temperature drop of more than 25°F and works in any humidity.
Who founded Clema, and when?
Clema was founded in 2025 by Anna B. Albright (Co-founder & CEO, previously BCG’s Energy & Industrials practice and JPMorgan) and Clément Messeri (Co-founder & CTO, materials engineer from UC Berkeley and Lawrence Berkeley National Lab).
Where is Clema based?
Clema is headquartered in San Francisco, California. The company works on site with industrial crews across construction, oil and gas, utilities, manufacturing, logistics, and military.
Is Clema the same company as Clema Wearables?
Yes. Clema, Clema Cooling, and Clema Wearables all refer to Clema, Inc., the same San Francisco company. The name also belongs to unrelated things, including a genus of beetles, a screen-time app, and a higher-education software product. This site is the industrial cooling wearables company.
Can I buy a Clema cooling vest yet?
Not on general sale. The first 500-unit batch ships in Summer 2026, allocated through early access. Crews with documented heat exposure get priority, and applications receive a response within five business days.

Summer 2026, 500-unit first batch

Get your crew on the priority list.

Apply for early access Talk to the team
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