A space blanket can go by many names, including an emergency blanket, a first aid blanket, a thermal blanket and a solar blanket. But whatever you call it, space blankets are designed as life-saving pieces that help users retain up to 90 percent of their body heat and, in extreme cases, can be the difference between life or death.
We often see space blankets in the media when someone crosses the finish line at a marathon or is being treated in the back of an ambulance. Space blankets are also a must-have item when preparing a survival pack. They’re also a great product to bring on trips to the outdoors when camping, hiking, and even skiing.
Space blankets are extremely thin and lightweight, which makes them easy to carry. Often waterproof and windproof, the blankets are made with Mylar, a polyester film that was initially made to protect space stations in orbit from high temperatures that could damage equipment and food. Known for its high tensile strength and extremely long shelf life (we’re talking decades), Mylar reflects body heat back to the source, aka the person in the blanket. Space blankets stop heat loss and, when used correctly, can help people avoid hypothermia.
Whether you’re preparing to run a marathon or preparing for the unexpected, these space blankets will keep you warm and safe.
1. Swiss Safe Emergency Mylar Thermal Blankets
For a blanket that will protect users from the elements and can be used in a variety of forms, we recommend the Swiss Safe Emergency Mylar Thermal Blankets. The four-pack of advanced dual-sided blankets are made with military-grade 12-micron aluminized polyethylene mylar for higher tensile strength and greater durability than competitors. Retain up to 90 percent of your body heat with the Swiss Safe blankets, which are waterproof and can be used as a shelter, water collector, shade cover, wind blocker and more. The Swiss Safe blanket shown here comes in army green and the blanket is also available in bright and visible colors like purple, orange and red, as well as green and white camo.
Pros: Each set of four Swiss Safe blankets comes with one bonus gold-colored space blanket.
Cons: The Swiss Safe blankets measure 52″ x 82″, making them slightly smaller than the other blankets on our list.
2. Primacare HB-10 Emergency Foil Mylar Thermal Blanket
The Primacare HB-10 Emergency Foil Mylar Thermal Blanket comes in a pack of 10 at an affordable price, making this an excellent option for use in large groups, with young scouts, for stashing around the home and car or handing out to those who are experiencing homelessness. The Primacare blankets measure 52” x 84” and are long enough to cover an adult or work as a shelter from the rain or snow. The Mylar insert helps users retain up to 90 percent of their body heat.
Pros: The Primacare blankets are the most affordable option per blanket on our list and ideal for large groups.
Cons: The Primacare blankets are only available in silver.
3. Grabber – The Original Space Brand Emergency Survival Blanket
Prevent shock, restore body heat, and shelter yourself from the elements with the Grabber – The Original Space Brand Emergency Survival Blanket. Weighing only 3 oz, the Grabber is one of the most lightweight space blankets available. The Grabber uses super-insulating materials to keep users warm even in sub-zero temperatures. The gold reflective blanket can easily be spotted by rescue personnel and the blanket can also be used to help stop bleeding and block wind and rain as a shelter.
Pros: The Grabber is made with four-layer construction of insulating materials and is approved for use by the Boy Scouts of America.
Cons: The Grabber helps users retain over 80 percent of their body heat while other options boast up to 90 percent heat retention.
4. Arcturus Heavy Duty Survival Blanket
Build a shelter or wrap yourself in protection with the Arcturus Heavy Duty Survival Blanket. The Arcturus features reinforced tie-down grommets on all four corners, making it easy for users to hang the blanket as a shelter or tie-down and keep it in place as a tarp. Available in five colors, each Arcturus blanket comes with a zippered waterproof carrying case and is waterproof, windproof and durable. The lightweight blanket weighs less than one pound and measures 60” x 82”.
Pros: The Arcturus has one Mylar reflective side for retaining up to 90 percent of the users’ body heat and a second side that features two layers of polypropylene to be used as the exterior of the blanket, tarp or shelter.
Cons: Because of the Arcturus’ polypropylene side it’s more prone to rips and becoming stiff in cold weather compared to solar blankets made entirely of Mylar.
5. PREPARED4X Emergency Blanket Poncho
Free your hands and keep your head protected while retaining 90 percent of your body heat when wearing the PREPARED4X Emergency Blanket Poncho. The Prepared4X uses Mylar to prevent hypothermia and keep wearers dry. The one-size-fits-all poncho measures 45” x 41 and is big enough to fit most adults and still have room to cover large backpacks. The Prepared4X folds down into a small package that fits in your pocket and comes with a reusable carrying bag. The Prepared4X can be worn inside out so that rescue crews have an easier time spotting the Mylar side of the poncho.
Pros: While most space blankets are made with 12-micron thickness, the Prepared4X ponchos are extra durable thanks to their military strength, tear and puncture-resistant 24-micron construction.
Cons: Because of the Prepared4X’s poncho design, this option is not as easily converted into a shelter as other space blankets.
6. Don’t Die In The Woods Emergency Sleeping Bag With Hood
If you want a space blanket that will keep you fully covered without blowing free in the wind, try the Don’t Die In The Woods Emergency Sleeping Bag With Hood. Described as the toughest Mylar sleeping bag on the market, the DDITW bag is made with tear-resistant, extra-thick HeatFlex Mylar that is stronger, more flexible and quieter than other space blankets. The windproof and waterproof sleeping bag is designed with a headcover to help ensure users don’t lose body heat through their heads.
Pros: The DDITW sleeping bag weighs only 7 oz and comes in a reusable nylon bag that fits in the palm of your hand, making this a lightweight and compact survival tool that is easy to keep in your car or bring on long trips.
Cons: It can be difficult to fold the sleeping bag back into its nylon carrying case.
7. Titan Two-Sided Emergency Mylar Survival Blankets
Keep two people protected at once with the Titan Two-Sided Emergency Mylar Survival Blankets. The five-pack of oversized Titan blankets measures 70” x 90” making it the largest blanket on our list. Reusable, waterproof and windproof, the Titan helps to prevent hypothermia and retain up to 90 percent of a user’s body heat. Owned and operated by US Veterans, Titan offers the blanket in discrete camo, olive, bright orange, and pink (Note: Only the orange and pink Signal Pattern color is available in the large size).
Pros: The Signal Pattern Titan blanket is 25 microns thick, making it the largest and thickest blanket on our list while still only weighing 5.5 oz.
Cons: The Titan blankets have a high price tag.