THERMAL ARCHITECTURE · PHYSICIAN DESIGNED
Performance when it matters most
The thermal performance system designed for healthcare, defense and outdoor recreation.
- 2 U.S. Patents
- 95% reflective lining
- Sizes S/M · L/XL · Extended
- Multiple colorways
- Manufactured in America
Key highlights
Physician designed
Created by an anesthesiologist for cold operating rooms.
Two U.S. patents
The pocket and panel architecture is patented.
Your heat, kept
Heat-reflective inserts and linings face your body.
Off the skin
Warmers sit in pockets that hold them away from your body.
Simple to run
Air-activated warmers or cold packs. Silent.
Heat or cool
CORE pockets take warmers or cold packs.
Under anything
Scrub jacket, gown, uniform, duty jacket or parka.
Made in America
Manufactured in America. Distributing globally.
Products
The heat path
Your body heat comes back. The warmer heats the air around you.
- Your body heat
- Added heat
- Warm air
- Reflective layer
The insert returns your body heat
Three reflective inserts face your body, over a base layer. Radiant heat that reaches them is sent back toward you.
The warmer heats the air under your outer layer
The warmer sits between the insert and the outer pocket fabric. Its heat goes outward, into the air under your jacket or gown, not into one spot on your skin.
You lose less heat
Warm air builds up between CORE and your outer layer, so less of your own heat leaves your body. CORE works best with an outer layer over it.
Why not a heated jacket?
Feeling warm is not the same as staying warm.
A few hot spots
Battery jackets press heat into small patches on the chest and back.
Kept low by your skin
Skin is the limit, so contact panels must run at low power.
Your heat, managed
HEATJAC keeps your own heat in and moves added heat off the skin.
Applications
Film
On the job.
HEATJAC CORE at work
Under the scrub jacket, the duty coat and the work jacket.
HEATJAC REFLECT at work
Under the jacket or the gown, from the clinic to the flight line.
Meet the Founder
HEATJAC wasn't invented in the outdoor industry. It was born in medicine.
HEATJAC was founded by Dr. Mark Silverberg, DDS, MD, a physician, anesthesiologist, inventor, and healthcare innovator whose career focused on patient care, procedural excellence, and solving real-world challenges in demanding environments.
After decades in operating rooms where temperature and comfort directly impact performance, recovery, and outcomes, Dr. Silverberg recognized a problem that traditional apparel and thermal solutions had never solved. The result was HEATJAC, a patented wearable thermal performance system designed to help users maintain comfort without bulk, restriction, or compromise. Originally developed to support warmth in cold operating room environments, the platform's versatile architecture also enables cooling configurations for applications where heat management is equally important.
Today, that same physician-driven innovation extends beyond healthcare into industrial, tactical, commercial, outdoor, and consumer applications, bringing clinician-designed thermal management to the people who depend on comfort, focus, and performance in demanding environments. Whether supporting warmth in cold conditions or cooling in challenging heat, HEATJAC was designed around a simple principle: helping people perform at their best when temperature matters.
Because when a thermal solution is developed by a doctor instead of a clothing company, it starts from a fundamentally different place.
Volume
Need to order larger quantities?
Contact us for volume discounts.