Heat Reflective Shell (HRS): When and How to Use It
By Products With A Mission | North American Rescue | Published: 2026-10-16
Category: How-to Guides
Learn when and how to apply the Heat Reflective Shell (HRS) for hypothermia prevention and tactical patient warming. Step-by-step guidance for field use.
Quick answer
Use the Heat Reflective Shell (HRS) as soon as you identify a casualty at risk of hypothermia, especially in cold, wet, or windy conditions. Apply it after removing wet clothing and drying the skin. The HRS is a single-use thermal shell that reflects body heat; it is not a warming device and does not generate heat. For airway management in critical situations, the Tactical Suction Device is a compact tool for rapid suction.
Recognizing when the HRS is needed
Hypothermia can develop in any environment where a patient is immobile, wet, or exposed to wind. Early signs include shivering, cold skin, and confusion. The HRS is designed for these situations, providing a reflective barrier that helps retain body heat. It is not a substitute for active warming or medical treatment, but it can slow heat loss during transport or while awaiting evacuation.
Preparing the patient and the shell
Before applying the HRS, move the patient out of the wind and remove wet clothing. Dry the skin if possible. The HRS comes in a standard size and is compact until opened. Once unrolled, it should be handled carefully to avoid tearing. If the patient has an airway issue, use the Tactical Suction Device to clear secretions before wrapping, as the shell may limit access to the airway.
Applying the HRS correctly
Unfold the HRS and place it under the patient, reflective side toward the body. Wrap it around the torso, arms, and legs, leaving the face exposed. Secure with tape or straps if available. Avoid covering the mouth and nose. The HRS can be used in combination with a blanket or sleeping bag for additional insulation. Check periodically for signs of overheating, though the HRS itself does not produce heat.
Step-by-step HRS application
- Assess the patient: Check for signs of hypothermia: shivering, cold skin, confusion. If present, proceed with HRS application. Do not delay if the patient is wet or in a cold environment.
- Remove wet clothing and dry the skin: Wet clothing accelerates heat loss. Remove it and pat the skin dry if possible. If you cannot dry the skin, apply the HRS anyway—it still helps.
- Unfold the HRS and position it: Place the reflective side against the patient's body, wrapping it around the torso, arms, and legs. Avoid covering the face; ensure the airway remains accessible.
- Secure the shell: Use tape or straps to keep the HRS in place during transport. Check that the shell is snug but not restrictive.
- Monitor and transport: Reassess the patient regularly. The HRS reflects heat but does not generate it, so continue other warming measures if available. If the patient's condition worsens, seek advanced medical care immediately.
Product facts
- Heat Reflective Shell (HRS): The Heat Reflective Shell (HRS) from Narescue is a health care product designed to provide thermal protection. It is part of the North American Rescue product line, intended for use in situations where heat reflection is needed. This means the HRS is purpose-built for emergency and tactical settings, where reliable thermal protection is critical.
