7 Best Emergency Blankets for Survival, Hiking, and Car Kits
Don’t get caught in the cold. We reviewed the top-rated Mylar sheets, bivvy sacks, and heavy-duty wool blankets to find the ultimate survival gear for your go-bag.
Why Every Adventurer Needs a “Space Blanket”
When you are miles from civilization or stranded on the side of the highway in a blizzard, retaining body heat isn’t just about comfort—it is about survival. The humble emergency blanket, often called a space blanket, was originally designed by NASA in 1964. Today, it is a staple in every cozy car road trip guide and hiker’s backpack.
Unlike standard best thermal blankets used for bedding, emergency blankets are engineered to reflect up to 90% of your radiated body heat back to you. They are lightweight, waterproof, and windproof. However, not all are created equal. Some rip instantly, while others are rugged enough to serve as ground tarps.
In this guide, we break down the top 7 options on the market, ranging from ultra-cheap bulk packs to heavy-duty wool investments.
Quick Comparison: Top Picks at a Glance
| Product | Best For | Material | Weight |
|---|---|---|---|
| Swiss Safe Emergency Mylar | Overall Value | Aluminized Mylar | 2 oz |
| Arcturus Heavy Duty | Rugged / Tarp | Mylar + Polypropylene | 1.4 lbs |
| SOL Escape Bivvy | Breathability | Proprietary Breathable Fabric | 8.5 oz |
| Ektos 100% Wool | Long-Term Survival | 100% Wool | 3.5 lbs |
| Titan Survival Blankets | Tactical / Camo | Mylar | 2 oz |
| Delmera Poncho | Mobility | PE Material | 2.6 oz |
| Don’t Die In The Woods | Size & Coverage | Mylar | 2.5 oz |
1. Swiss Safe Emergency Mylar Thermal Blankets
Best Overall Value
If you are looking to outfit multiple kits at once—say, one for the car, one for the home, and one for each family member’s backpack—Swiss Safe is the industry standard. These come in packs (usually 4 or 10) and offer a dual-sided design: one side is gold (to absorb heat) and the other silver (to reflect heat).
They are significantly thicker than the dollar-store variety, meaning they won’t shred the moment you unfold them. While they aren’t as cozy as cozy blankets for the living room, they are lifesaving tools that fit in the palm of your hand.
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2. Arcturus Heavy Duty Survival Blanket
Best Heavy Duty
The Arcturus takes the reflective properties of a space blanket and marries them with the durability of a tarp. One side is reflective Mylar; the other is two layers of polypropylene. This sandwich construction means you can use it as a ground cloth, a lean-to shelter, or even a picnic mat on damp grass (a rugged alternative to the best blanket for beach trips).
It features four reinforced grommets, allowing you to tie it down in high winds—something impossible with standard Mylar sheets.
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3. SOL Escape Bivvy
Best Breathable
The biggest issue with Mylar is condensation. You seal in heat, but you also seal in sweat, which can eventually freeze and make you colder. The SOL Escape Bivvy solves this with a proprietary fabric that reflects heat but allows moisture to escape.
This is a sleeping bag style system (bivvy), meaning you climb inside it. It pairs perfectly with a travel pillow and blanket set for emergency layovers or unplanned nights in the woods.
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Watch: Real World Testing
See how different emergency blankets hold up in actual cold weather conditions.
4. Ektos 100% Wool Blanket
Best Natural Fiber
Sometimes the old ways are the best. Unlike synthetic materials, wool retains its insulating properties even when wet. The Ektos blanket is 100% wool, making it fire-retardant and exceptionally durable. It is ideal for bushcraft or keeping in a vehicle where weight isn’t an issue.
While it lacks the immediate heat-reflection of Mylar, it provides better long-term comfort. For a deeper understanding of why wool is superior for insulation, read about Merino wool benefits.
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5. Titan Two-Sided Emergency Mylar Survival Blankets
Best Tactical
Most emergency blankets are bright silver or orange for rescue visibility. However, military personnel or hunters often need to stay hidden. Titan Survival offers a Woodland Camo version that blends into the forest while still providing the reflective silver interior for heat retention.
These are individually packed and fit easily into blanket storage bags or tactical vests. Titan claims their Mylar weave is quieter than standard competitors, reducing that “crinkling chip bag” noise.
6. Delmera Emergency Poncho
Best Wearable
Trying to hold a blanket around your shoulders while walking, gathering wood, or tending to a child is difficult. The Delmera Poncho solves this by adding a hood and arm openings. It acts as a windbreaker and a heat reflector simultaneously.
This is an excellent addition to a family kit, especially if you have children in a stroller who might need coverage in a sudden downpour (see stroller blanket options).
7. Don’t Die In The Woods Freakin’ Huge Emergency Blanket
Best Coverage
Standard emergency blankets are often 52″ x 82″. This option provides significantly more surface area, allowing you to wrap it around your body multiple times or share it with a partner. The extra height is crucial for tall individuals who find their feet sticking out of standard blankets.
It comes with a durable nylon stuff sack, making it easier to repack than the Swiss Safe options.
Frequently Asked Questions
1. Do emergency blankets actually keep you warm?
Yes, but they do not *generate* heat like a 12v heated blanket. They reflect your own body heat back to you. For them to work effectively, you must minimize the air gap between your body and the blanket.
2. Can I reuse a Mylar blanket?
Most cheap Mylar blankets (under $2) are designed for single use because they stretch and tear easily. Heavy-duty options like the Arcturus or SOL Bivvy are definitely reusable. If you do reuse them, ensure they are dry before folding to prevent mold.
3. How do I clean an emergency blanket?
For Mylar, simply wipe it down with a damp cloth and mild soap. Do not put it in a washing machine. For wool options like Ektos, follow specific wool care instructions or read our guide on washing heavy blankets for similar principles.
4. Are these safe for babies?
Mylar is a choking and suffocation hazard. Never leave an infant unattended with a Mylar sheet. For cold weather protection for infants, stick to breathable layers and approved baby blankets.
5. Can I use these for my dog?
Yes, in an emergency. However, dog claws will rip standard Mylar instantly. The Arcturus tarp or an old wool blanket is a better choice for pets. See our best pet blanket recommendations for everyday use.
6. What is the difference between a bivvy and a blanket?
A blanket is a flat sheet. A bivvy is a bag (like a sleeping bag) that you slide into. Bivvies are generally warmer because they seal out drafts completely, but they are harder to get in and out of.
7. Do they expire?
Mylar does not expire, but the aluminum coating can flake off over many years if folded tightly in high heat. It is good practice to replace cheap foil blankets every 3-5 years.
Final Verdict
For most people, the Swiss Safe 10-Pack is the smartest buy. It’s cheap, effective, and allows you to stash a blanket everywhere. However, if you are serious about hiking or winter survival, upgrading to the SOL Escape Bivvy or the Arcturus Heavy Duty Blanket is an investment that could save your life.
Don’t wait for a blizzard to realize your survival kit is empty.