Go Time Gear Mylar Emergency Bivy Bag — Green 2-Pack, Tear-Resistant Reflective Shelter with Whistles

The Go Time Gear Mylar Emergency Bivy Bag is a tear-resistant, reflective emergency bivvy sold as a lightweight 2-pack for compact survival and cold-weather protection.

Designed for quick deployment and easy storage, this green Mylar bivvy is made to be part of any go-bag, glovebox, or pack. At just over 4 ounces per unit, it combines a puncture-resistant outer layer with a reflective interior to trap radiant heat and block wind and rain. Each bivvy also includes a high-decibel whistle so you can attract attention if you become separated from your group or need help during an emergency.

How does this bivy keep you protected in bad weather?

The Mylar material sheds water and resists tears while the reflective interior helps retain body heat by reflecting infrared energy back to the user. Its simple envelope shape creates a shelter-like barrier against wind and precipitation and can be used inside a tent or on its own.

• Tear-resistant Mylar outer shell reduces punctures and rips
• Reflective inner surface preserves radiant heat
• Weatherproof seams and low-profile shape block wind and rain

How compact and lightweight is the Go Time Gear bivy for packing?

Each bivy weighs about 4.1 ounces and folds down to a pocketable size, making it easy to stash in emergency kits, backpacks, or vehicle storage. The slim profile adds minimal bulk while providing a full-body shelter when needed.

• Approximately 4.1 ounces per bivy—minimal added weight
• Rolls or folds small to slide into pockets or small compartments
• 2-pack format gives redundancy without doubling volume

Can this bivy serve more than one purpose?

Yes—beyond functioning as an emergency sleeping bag, the bivy can be used as a reflective blanket, groundsheet, or temporary windbreak. Its versatility makes it useful for first-aid scenarios, signaling, and insulation in improvised shelters.

• Use as a full-body emergency sleeping bag or reflective blanket
• Lay flat as a ground cover to keep moisture away
• Combine or layer with other gear for additional warmth

What features help you get rescued if needed?

Each bivy includes a built-in whistle rated around 120 decibels to amplify distress signals. The bivy’s reflective surface also enhances visibility in search situations when caught by light sources such as flashlights or headlamps.

• Integrated 120-decibel whistle for audible signaling
• Reflective exterior increases chance of being seen
• Bright green color aids visual identification in daylight

Who is this for? The Go Time Gear Mylar Emergency Bivy Bag is aimed at hikers, campers, drivers, and anyone building a lightweight emergency kit. It suits backpackers who prioritize low weight and small packed size, roadside emergency kits, workplace safety packs, and outdoor guides who want an inexpensive, multi-use shelter option. It’s particularly useful where weight, compactness, and simple, reliable weather resistance matter most.