These two cheap bits of kit both fight the cold, but they fight it from opposite directions, and understanding the difference stops you buying the wrong one. A sleeping mat stops heat draining out of you into a cold floor — the ground pulls warmth away far faster than cold air does, which is why people who sleep on a floor in a power cut often feel colder than expected. An emergency (foil) blanket does the opposite job: it wraps around you to reflect escaping body heat back and block wind and damp.
Because they solve different problems, the strongest setup usually uses both together rather than choosing one. If you can only start with one, the right pick depends on whether your main issue is a cold surface underneath you or heat escaping around you.
| Feature | Sleeping Mat | Emergency Blanket |
|---|---|---|
| What it does | Insulates you from the cold ground so heat is not drawn away underneath. | Reflects escaping body heat back and blocks wind and rain around you. |
| Where it helps most | Sleeping or sitting on a cold floor, tiles, decking or ground. | Trapping warmth over the top of you, or as an emergency wrap outdoors. |
| Comfort and reuse | Comfortable and reusable for years; some self-inflate for cushioning too. | Thin, noisy and often single-use, though multipacks are cheap to restock. |
| Size and cost | Bulkier and pricier, but a genuine long-term piece of kit. | Pocket-sized and very cheap — easy to keep several spare. |
| Best for | Home power cuts, camping and anyone bedding down away from a normal bed. | Grab bags, car kits and first-aid use where warmth and packability matter. |
Choose a sleeping mat when the problem is the surface underneath you — sleeping on a floor during a power cut, camping, or bedding down somewhere without a proper bed. It gives back far more warmth than its price suggests, and a self-inflating version adds comfort as well as insulation.
It is the better long-term buy for a home emergency kit, because it works night after night and pairs naturally with a sleeping bag or duvet on top.
Choose an emergency blanket when you need cheap, packable warmth to keep on hand in several places at once — a grab bag, the car, a first-aid kit or a coat pocket. It weighs almost nothing and reflects real body heat back when you are caught out in the cold.
It is also the right tool for first-aid and outdoor emergencies, where its job is to slow heat loss fast rather than to make a comfortable bed.
These are not really rivals — they cover different halves of staying warm, and a good kit has both. If you are bedding down on a cold floor, the sleeping mat matters more; if you need portable warmth spread across bags and the car, stock a few emergency blankets.
For a home winter power cut, start with a sleeping mat and a warm layer on top, then keep a couple of foil blankets in the kit and one in the car. Together they cost little and cover both the cold coming up from the floor and the heat trying to escape around you.
A self-inflating mat from a trusted UK bedding brand — insulates against cold ground and packs down into its own storage bag, no separate pump needed.
An inflatable sleeping mat that packs down to about the size of a water bottle, so it slots into a grab bag far more easily than a bulky self-inflating roll. It lifts you off cold, hard ground, which helps you rest and stay more comfortable overnight. Inflates in a couple of minutes and deflates fast when you need to move on.
A single branded foil survival blanket that reflects radiated body heat back to help stave off hypothermia while you wait for help. It packs down small enough to live in a coat pocket, car glovebox or first-aid kit. Best treated as one-time emergency insulation rather than reusable kit.
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.
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