<p>An emergency blanket, sometimes called a space blanket or foil blanket, is a sheet of thin metallised film, usually around 1.3 by 2 metres, that weighs next to nothing and folds down to the size of a deck of cards. Its silver or gold coating reflects radiant body heat back towards the wearer and blocks wind and rain, which is why you see them in first aid kits, marathon finish areas and car breakdown kits across the UK. It is designed as a stopgap for genuine emergencies rather than everyday use, and most versions are built for one or two uses before the thin film tears, punctures or the seams give way under any real strain.</p>
<p>A wool blanket is a heavier, old-fashioned piece of kit made from wool or a wool blend, typically weighing one and a half to two and a half kilograms and folding into a bulky bundle rather than a pocket-sized packet. It provides genuine insulation by trapping warm air in its fibres, and it keeps working reasonably well even when damp, which suits Britain's wet cold far better than cotton bedding does. The two are not really competing for the same job: one is an ultralight emergency reflector for occasional use, the other a durable, everyday warmth layer. Emergency blankets typically cost one to eight pounds each, while a decent wool blanket runs from around fifteen to fifty pounds depending on size and quality.</p>
| Feature | Emergency Blanket | Wool Blanket |
|---|---|---|
| Warmth | Reflects existing body heat and blocks wind, but provides little insulation of its own without a layer underneath. | Genuinely insulating, trapping warm air in the wool fibres for real, sustained warmth. |
| Weight & pack size | Around 50 to 100 grams, folding to the size of a small deck of cards; easily lost in the bottom of a bag. | Roughly 1.5 to 2.5 kilograms, folding into a bulky bundle about the size of a rolled sleeping bag. |
| Durability & reusability | Thin film that punctures, tears and crackles easily; often good for only one or two uses before it fails. | Robust natural fibre that can be washed and reused for years, sometimes decades, with basic care. |
| Weather resistance | Waterproof and windproof as a barrier, but traps condensation underneath rather than managing moisture. | Not waterproof, but retains much of its insulating value even when damp, unlike cotton fabrics. |
| Ease of use | Unfolds in seconds and wraps around a person almost instantly, ideal for urgent first aid situations. | Takes a moment longer to unfold and settle, but stays put around shoulders without crinkling or slipping. |
| Best environment | Glovebox breakdown kits, hiking daypacks, first aid kits and event finish lines where every gram counts. | Home power cuts, car boots, camping trips and caravans where sustained comfort matters more than bulk. |
| Price band | Roughly 1 to 8 pounds each, often cheaper still when bought in multipacks. | Roughly 15 to 50 pounds depending on size, wool content and whether new or ex-military surplus. |
<p>Choose an emergency blanket when weight and pack size matter more than comfort, and you need a genuine last-resort option rather than everyday warmth. It earns its place in a car glovebox, a hiking daypack, a first aid kit or a bug-out bag, where its near-zero weight means there is no excuse not to carry one. It is also sensible to buy several at once and stash one in every vehicle, rucksack and emergency kit in the house, since a multipack costs less than a single wool blanket. Treat it as a backstop for the unexpected, not a substitute for proper bedding.</p>
<p>Choose a wool blanket when you want warmth you can actually rely on for hours, not minutes. For a home power cut, a night stuck in the car, a camping or caravan trip, or simply keeping something warm and washable on the sofa or by the door, wool does a far better job of real insulation. It copes with damp British weather better than most alternatives, does not rustle or tear, and lasts for years rather than a single use. If comfort and reusability outweigh pack size, the wool blanket is the stronger everyday choice.</p>
<p>These two solve different problems and are best thought of as complementary rather than rivals. An emergency blanket is an ultralight, low-cost backup that belongs in every car, rucksack and first aid kit precisely because it takes up almost no space, while a wool blanket is the genuine, reusable warmth layer for the home, the car boot and camping trips where comfort matters. For most UK households, the sensible move is to keep several emergency blankets scattered through kits and vehicles as cheap insurance, and rely on a proper wool blanket for anywhere you might actually need to stay warm for a while.</p>
A multipack of reflective mylar blankets that reflect body heat back to fight the cold and shock. Cheap insurance to scatter through car, home and grab kits.
A large, durable lambswool blanket that insulates even when damp and resists flame — dependable, reusable warmth for cold homes, winter car kits and nights outdoors.