What are thermal blankets made of?

Thermal blankets can be made from a variety of materials, typically, they are made from a heat-reflective, lightweight, plastic fabric. Blankets such as foil blankets are made from a thin plastic, named polyethylene terephthalate.

THERMARMOUR thermal blankets are comprised of four layers for maximum efficiency. The outer foil layer, the central foil layer, the inner foil layer, and the thermal fleece layer. The outer foil layer is waterproof and windproof to protect you from the elements. The soft inner fleece layer provides the user with comfort while awaiting further assistance or triage.