Ultralight Thermal Emergency Bivvy Sack with Survival Whistle

Stay prepared for unexpected weather, vehicle breakdowns, and outdoor emergencies. Built from durable, heat-reflective PE aluminum film, this compact emergency sleeping bag retains up to 90% of your body heat to protect against hypothermia and severe cold.

Key Features

• Maximum Heat Retention: Engineered with heavy-duty PE aluminum film that blocks wind, rain, and snow while reflecting your body heat back to you.

• High-Visibility Emergency Signal: The reflective thermal surface doubles as an emergency signal mirror, making it easier for search and rescue teams to spot you from a distance.

• Ultralight & Compact: Weighing under 8 oz (238g) for the set, it easily packs into your bug-out bag, glove compartment, or tactical backpack without taking up space.

• Multi-Use Outdoor Tool: Functions as an emergency bivvy shelter, rain poncho, ground tarp, or sleeping bag liner for extreme cold weather.

Versatile Use Cases

1. Emergency Warmth: Wrap yourself after an accident or during a vehicle breakdown in freezing temperatures.

2. Sleeping Bag Booster: Slip inside your standard sleeping bag as a thermal liner to drastically improve heat retention.

3. Emergency Rain & Wind Shelter: Pitch it as an emergency tarp or wear it as a waterproof poncho during torrential rain.

4. Sun Deflector: Cover vehicle windshields or tent roofs in scorching heat to reflect direct sunlight and lower internal temperatures.

Specifications

• Material: Heavy-Duty PE Aluminum Film

• Design Structure: Envelope-Style Bivvy

• Weight: 8.4 oz / 238 g (Total Set)

• Includes: (2) Emergency Thermal Sleeping Bags, (1) Compact Carrying Stuff Sack

Packing list:
Pe sleeping bag*2+outer bag,