Reliable Emergency Blankets for Your Survival Kit
For most people the SOL Survive Outdoors Longer blanket is the strongest all-round pick, reflecting body heat while staying compact. The Swiss Safe Mylar pack is the best value for stashing several backups, and the Ohuhu Mylar set is the cheapest way to cover a whole family.
For most kits the SOL Survive Outdoors Longer Emergency Blanket is the safest all-round choice because it reflects body heat well and still folds down small, while the Swiss Safe Mylar multipack is the better value when you want several cheap backups and the Ohuhu Mylar set covers a family for the least money.
Emergency blankets are trickier to judge than they look, since a thin foil sheet and a heavy reusable tarp both get sold as one. We compared them on heat reflectivity, tear resistance, packed weight and whether they survive more than one use, drawing on published specifications and what owners report over repeated trips.
What matters most
Foil sheet or reusable blanket The first choice is between throwaway Mylar sheets and heavier reusable blankets. Mylar is cheap, tiny and light, which makes it perfect for seeding many kits, but it tears and rarely survives more than one use. Reusable blankets with fabric backing and grommets cost and weigh much more, yet they double as shelter, ground cover or a windbreak for years.
How heat retention actually works An emergency blanket does not generate warmth. It reflects the heat your body already radiates back toward you, which is why the reflective coating and a snug wrap matter more than thickness alone. Reflection percentages on the label give a rough guide, but sealing drafts by wrapping fully makes the biggest difference in real cold.
Packed size and where it lives Match the blanket to where it will be stored. A pocket or daypack rewards the smallest Mylar sheet, while a car trunk or base camp can carry a bulkier reusable model that offers far more capability. Many people keep both, a cheap sheet on their person and a rugged blanket in the vehicle.
Durability and visibility extras If you expect to reuse the blanket or rig it as a shelter, look for reinforced corners and grommets. A high-visibility orange or bright side is worth having if being found matters, since a reflective marker helps search parties spot you. Thicker gauge Mylar resists the pinholes that quietly kill cheaper sheets.
The top picks, ranked
SOL Survive Outdoors Longer Emergency Blanket
This blanket uses a tougher polyethylene lining than plain foil, so it reflects a high share of radiated body heat without tearing the first time you unfold it. The high-visibility exterior also helps rescuers spot you. It packs small enough to forget it is in your bag until you need it.
Pros
- Far more tear resistant than basic Mylar
- Bright exterior aids visibility to rescuers
- Compact and light for a jacket pocket
Cons
- Costs more than a plain foil sheet
- Refolding to original size takes patience
Swiss Safe Emergency Mylar Thermal Blankets
Sold in multipacks, these Mylar sheets let you seed a blanket into every car, backpack and drawer without much cost. Each one reflects most radiated heat and weighs almost nothing. They are single use in practice, but having several on hand is the point.
Pros
- Very low cost per blanket
- Enough sheets to stock several kits
- Feather light and pocket sized
Cons
- Thin film tears if snagged
- Hard to refold once opened
Arcturus Heavy Duty Survival Blanket
This is a rugged reusable blanket with grommets, built more like a tarp than a foil sheet. Owners report using it as a ground cover, lean-to or wind break for years. It weighs and packs much larger than Mylar, so it suits a vehicle or base camp rather than an ultralight kit.
Pros
- Genuinely reusable for years
- Doubles as a tarp or ground sheet
- Grommets allow rigging as shelter
Cons
- Bulky and heavy for a daypack
- Overkill for a simple pocket backup
Grabber Outdoors The Original Space All Weather Blanket
The Space brand blanket adds a fabric backing and grommets to the reflective layer, so it stands up to repeated folding far better than a foil sheet. It is a sensible middle ground between throwaway Mylar and a full tarp, and owners keep one in the trunk for cold games and breakdowns.
Pros
- Holds up to repeated use
- Grommets help pin it as a windbreak
- Warmer feel than bare Mylar
Cons
- Heavier than pocket blankets
- Not truly waterproof in downpours
Titan Survival Two-Sided Mylar Survival Blankets
Titan makes its Mylar thicker than most throwaway sheets and gives one side a bright orange face for signaling. That combination means it reflects heat while doubling as a visual marker for search parties. It still packs small enough for a glovebox or pack pocket.
Pros
- Thicker than typical foil sheets
- Bright side helps rescuers find you
- Larger footprint than many rivals
Cons
- Still creases and tears eventually
- Pricier than plain Mylar packs
Don’t Die In The Woods World’s Toughest Emergency Blankets
These blankets are marketed on their thickness, using a heavier gauge Mylar that resists the pinholes and tears that ruin cheaper sheets. Owners report they survive a few uses rather than one. The oversized cut also wraps larger adults more completely.
Pros
- Noticeably thicker than budget foil
- Generous size wraps big adults
- Comes as a stockable four pack
Cons
- Costs more than thin Mylar
- Bulkier packed than the lightest sheets
Ohuhu Emergency Mylar Thermal Blankets
Ohuhu sells its Mylar sheets in large counts for very little, which makes them ideal for classrooms, events or a bug-out box where you just need many bodies covered. Each reflects most radiated heat and weighs next to nothing. Treat them as single use and keep spares.
Pros
- Lowest cost per blanket here
- Bulk count suits groups
- Tiny packed size and weight
Cons
- Thin film punctures easily
- Effectively single use
How they compare
| # | Model | Material | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | SOL Survive Outdoors Longer Emergency Blanket | Metalized polyethylene | Best overall | 9.4 | Check price |
| 2 | Swiss Safe Emergency Mylar Thermal Blankets | Aluminized Mylar | Best value | 9.1 | Check price |
| 3 | Arcturus Heavy Duty Survival Blanket | Reflective insulated fabric | Best for base camp | 9.0 | Check price |
| 4 | Grabber Outdoors The Original Space All Weather Blanket | Reflective film on fabric | Best reusable pick | 8.8 | Check price |
| 5 | Titan Survival Two-Sided Mylar Survival Blankets | Two-sided Mylar | Best for visibility | 8.6 | Check price |
| 6 | Don’t Die In The Woods World’s Toughest Emergency Blankets | Heavy gauge Mylar | Best for durability | 8.4 | Check price |
| 7 | Ohuhu Emergency Mylar Thermal Blankets | Aluminized Mylar | Best budget | 8.1 | Check price |
Frequently asked questions
Do emergency blankets really keep you warm?
They help by reflecting a large share of your radiated body heat back to you, which slows heat loss. They do not produce warmth on their own, so wrapping snugly and blocking wind matters. In genuine cold they work best combined with insulation underneath you.
Are Mylar blankets reusable?
Thin Mylar sheets are best treated as single use because they crease, tear and become hard to refold once opened. Heavier blankets with fabric backing and grommets are designed to be used repeatedly and can last for years with care.
Which side faces in, shiny or dull?
For most single-color Mylar blankets both sides reflect similarly, so orientation matters little. On two-sided models with a bright signal side, keep the reflective side toward your body for warmth and the high-visibility side out if you want to be seen.
How small do these pack down?
A basic Mylar sheet folds to roughly the size of a deck of cards and weighs about half an ounce. Reusable fabric-backed blankets are much larger, closer to a folded hand towel, and can weigh several ounces or more.
Can I use one as a ground cover or shelter?
Reusable blankets with grommets are well suited to rigging as a lean-to, windbreak or ground sheet. Thin Mylar can serve in a pinch but tears easily under tension, so it is better wrapped around a person than staked out.
How many should I keep on hand?
Because the light sheets are so cheap, many people keep several, one in each vehicle, backpack and drawer, plus spares. A single rugged reusable blanket for the car and a few Mylar sheets for pockets is a common, sensible mix.
Do they expire or degrade in storage?
The reflective coating is stable, but heat, sharp objects and repeated folding shorten a sheet’s life. Stored flat and away from punctures, a sealed Mylar blanket keeps for years. Inspect reusable models occasionally for cracks in the coating.
Are they waterproof?
Mylar sheets shed light rain and block wind but are not built for sustained downpours and can let water pool or run through seams. Fabric-backed reusable blankets handle wet weather better, though few are fully waterproof, so pair them with proper rain gear.
The bottom line
For a pocket or pack that needs to stay light, the SOL Survive Outdoors Longer blanket balances real warmth retention with tear resistance better than anything else here. Stock a few Swiss Safe or Ohuhu Mylar sheets as cheap backups, and keep an Arcturus or Grabber reusable blanket in the vehicle for the times you need shelter as much as heat.
