Emergency blanket
Overview
An emergency blanket is a thin, reflective sheet designed to help reduce heat loss from a person in distress. It is a common component of compact first aid and emergency kits.
Key points
- Often referred to as a space blanket or thermal blanket.
- Uses a reflective surface to help reduce radiant heat loss.
- Provides wind and light precipitation resistance but limited durability.
- Most effective when used with existing insulation and shelter.
- Intended for short-term emergency use rather than routine camping.
Details
Emergency blankets are usually made from lightweight plastic films with a reflective metallic coating. When wrapped around a person, they can help reduce heat loss by reflecting a portion of emitted body heat back toward the body and shielding against wind. They are compact and relatively inexpensive, which makes them a common inclusion in small emergency kits.
Although useful in emergencies, these blankets have limitations. They are prone to tearing, can be noisy and difficult to manage in strong wind, and may not provide sufficient insulation on their own in cold conditions. They are most effective when used alongside insulating layers, dry clothing, and other shelter components.
In the context of thru hiking, emergency blankets are used as a backup measure for unexpected situations rather than as primary sleep systems. Some hikers also use them creatively as temporary wind barriers or reflective layers in specific situations, while still treating them as fragile, last-resort items.
Carrying an emergency blanket is one of many approaches to contingency planning. It does not replace route planning, weather awareness, or carrying clothing and shelter suited to anticipated conditions.
Related topics
Disclaimer: thruhikingwiki.com is an independent, informational reference only. It is not an official source for any trail association, land manager, park, agency, or guide service. Nothing on this site is legal, safety, medical, navigation, or professional advice, and it does not replace formal training or certified instruction. Thru-hiking and backcountry travel involve significant risk. Local regulations, land manager rules, and manufacturer instructions always take priority. You are solely responsible for your planning decisions, safety practices, and compliance with applicable laws. Use this site at your own risk.
Illustrative hiking footage
The following external videos offer general visual context for typical hiking environments. They are not official route recommendations, safety instructions, or planning tools.