noun
emergency blanket; space blanket
A lightweight, heat-reflective sheet used in first aid, survival kits, or disaster preparedness to retain body heat.
登山用のリュックに緊急シートを入れておく。
I keep an emergency blanket in my hiking backpack.
災害時に備えて、緊急シートを
I always have an emergency blanket ready in case of a disaster.