Metallised film or a reusable bivvy — two different objects

The best emergency blankets for 2026

This family covers two objects that are sold side by side and are not the same purchase. The foil sheet is a thin metallised PET film, folded to about the size of a phone, weighing a few tens of grams; it is the cheapest thing in a rucksack and it is essentially single use, because once unfolded it never packs down the same way and the film tears at the creases. The reusable version — a heavier laminate, sometimes made up as a bivvy bag or a tarpaulin with taped edges and eyelets — costs several times as much, weighs several times as much, and survives being packed away again. The specifications to read are ordinary ones: unfolded dimensions, since a sheet that does not cover a person is the wrong size, film thickness where the maker publishes it in microns, packed size and stated weight, and the colour of each face, because many are silver on one side and orange or gold on the other. For what the product is intended to do and how to use it, follow the manufacturer's instructions. We compare unfolded dimensions, material and film thickness, stated weight, packed size, whether it is reusable, and the colour of each face.

The ones worth packing

1. 

   GIMA single emergency blanket, 210 × 160 cm, 60 g stated

   Two of the seven columns filled cleanly — size and weight — on a listing whose title and bullets place the silver and gold faces three different ways.

   Unfolded dimensions

   210 × 160 cm — stated in the first bullet

   Material

   Not published on the listing — no film, foil or polymer is named anywhere in the title or the three bullets

   Film thickness

   Not published on the listing

   Stated weight

   60 g — stated in the first bullet, alongside the dimensions

   Packed size

   Not published on the listing

   Reusable

   Not published on the listing — the maker says nothing either way

   Colour of each face

   One silver face and one gold face — stated, but placed inconsistently: the title puts silver inside and gold outside, the second bullet has the gold face outside, and the third has the silver face outside

   Amazon reference

   B00DBU1FQE (same reference on 4 Amazon marketplaces)

   EAN

   0806808387912

   • Publishes both the unfolded size and the weight in a single line, which only one other listing here does as plainly
   • Names both face colours, so you know before ordering that it is a two-colour sheet
   • Three sentences on the same listing place the two faces three different ways

   Best for: A single two-colour sheet at a published size and weight, where a maker reference matters.

   ≈ 5 €

   Check price on Amazon
2. 

   buxmed pack of five gold-and-silver emergency blankets

   A five-pack that names its foil and its two face colours and then publishes not a single measurement — no size, no thickness, no weight and no packed size.

   Unfolded dimensions

   Not published on the listing — no measurement appears in the title or in any of the five bullets

   Material

   A metallised foil — the maker calls it a gold-and-silver metal foil and a reflective film, and names no polymer behind it

   Film thickness

   Not published on the listing

   Stated weight

   Not published on the listing — the maker calls the pack light and compact without a figure

   Packed size

   Not published on the listing — stated only as folding small

   Reusable

   Not published on the listing

   Colour of each face

   One silver face and one gold face — stated, and the maker describes what it says each face is for

   Amazon reference

   B0GL4NTQSF (same reference on 5 Amazon marketplaces)

   EAN

   4255841401813

   • Names both face colours and keeps the same arrangement across the title and the bullets, which one listing here does not
   • Describes the sheet as a metallised foil rather than leaving the construction to a photograph
   • Not one measurement anywhere: no unfolded size, no packed size, no thickness and no weight

   Best for: Stocking several sheets at once where the size of each is not the deciding factor.

   ≈ 10 €

   Check price on Amazon
3. 

   Bramble pack of ten aluminium foil emergency blankets, 210 × 160 cm

   A ten-pack that publishes its unfolded size and names an aluminium foil, and then leaves the thickness, the weight and the packed size blank.

   Unfolded dimensions

   210 × 160 cm — stated in the title and repeated in the bullets

   Material

   Aluminium foil — the maker names an aluminium foil in the bullets and an aluminium thermal blanket in the title

   Film thickness

   Not published on the listing

   Stated weight

   Not published on the listing — the maker calls the sheets superlight without giving a figure

   Packed size

   Not published on the listing — stated only as fitting into a first-aid case without taking much room

   Reusable

   Not published on the listing

   Colour of each face

   One gold face and one silver face — stated in the title as Gold/Silber, and the bullets name the gold side specifically

   Amazon reference

   B01M19HAEB (same reference on 6 Amazon marketplaces)

   EAN

   0714983183772

   • Puts the unfolded size in the title, so the covering area is settled before you open the listing
   • Names the material as an aluminium foil rather than leaving it as a generic rescue film
   • No film thickness, which is the figure that separates a single-use sheet from one that packs away again

   Best for: Filling several kits at once with sheets of a known covering size.

   ≈ £13 / 12 €

   Check price on Amazon
4. 

   Takit pack of five Mylar blankets, 210 × 160 cm, 12 micron film, stated reusable

   The only blanket in this family to publish every column the hub compares, including the 12 micron film thickness and a reuse claim nobody else here makes.

   Unfolded dimensions

   210 × 160 cm — stated in the title and repeated in two bullets

   Material

   Mylar — named in the title and again in the bullets as a durable Mylar rescue blanket

   Film thickness

   12 microns — stated by the maker alongside the 210 × 160 cm figure

   Stated weight

   60 g — written by the maker as 60 g/Pack on a listing that sells five blankets, without saying whether the figure is per blanket or for the set

   Packed size

   12 × 7.5 cm folded — stated in the first bullet

   Reusable

   Reusable — stated by the maker in the fourth bullet, alongside waterproof and windproof

   Colour of each face

   Gold and grey — stated in the title as Gold & Grau, and the bullets refer to the gold colour

   Amazon reference

   B0788DYBCT (same reference on 6 Amazon marketplaces)

   EAN

   3760275730442

   • The only one of the seven blankets here with a value on every column this hub compares
   • Publishes the film thickness in microns, which only one other listing in this family attempts in any unit
   • The weight is written as 60 g/Pack on a five-blanket listing, which leaves it unclear whether it is per sheet or for the set

   Best for: Buying on the specification rather than on the price, where the film thickness is the deciding number.

   ≈ 12 €

   Check price on Amazon
5. 

   HappyDaily pair of orange Mylar emergency bivvy bags, with pouches, whistles and carabiners

   A pair of Mylar bivvy bags sold in this family rather than a flat sheet, whose listing names the film and the outer colour and publishes no measurement of any kind.

   Unfolded dimensions

   Not published on the listing — no length, width or opening size appears in the title or in any of the five bullets

   Material

   Mylar — the maker names an insulating Mylar film and describes it as waterproof, windproof, tear-resistant and puncture-resistant

   Film thickness

   Not published on the listing

   Stated weight

   Not published on the listing — the maker says the added weight goes unnoticed, without a figure

   Packed size

   Not published on the listing — a compact drawstring pouch is supplied and its size is not given

   Reusable

   Not published on the listing

   Colour of each face

   Bright orange with a reflective surface on the outside — stated; the maker does not name the colour of the inner face

   Amazon reference

   B0G2WQTR8R (same reference on 5 Amazon marketplaces)

   EAN

   0758569323930

   • Made up as a bag rather than a flat sheet, which is a different object and the listing is clear about it
   • Names the film as Mylar and lists what the maker says it resists: water, wind, tearing and puncture
   • No measurement of any kind: no bag dimensions, no packed size, no thickness and no weight

   Best for: Carrying a shaped bag rather than a flat sheet, with a whistle and a carabiner in the same pouch.

   ≈ 12 €

   Check price on Amazon
6. 

   LATTCURE orange aluminised PE emergency bivvy bag, 0.026 mm film, 120 g stated

   One of two listings in this family to publish a film thickness, and the only one to publish it in millimetres — 0.026 mm, alongside a stated 120 g.

   Unfolded dimensions

   Not published on the listing — no length or width for the bag appears anywhere

   Material

   Aluminised PE film — named by the maker in the first bullet

   Film thickness

   0.026 mm — stated by the maker in millimetres, and reproduced here in the unit the maker used

   Stated weight

   120 g — stated in the same bullet as the thickness

   Packed size

   Not published on the listing — stated only as folding into something small enough to stow almost anywhere

   Reusable

   Not published on the listing

   Colour of each face

   Bright orange on the outside — stated, and the maker says the colour is there to be noticed; the inner face is not named

   Amazon reference

   B08PL29HZZ (same reference on 5 Amazon marketplaces)

   EAN

   6093200955601

   • Publishes a film thickness and a weight in the same sentence, which only one other listing in this family does
   • Names the film precisely as aluminised PE rather than leaving it as a generic rescue foil
   • The thickness is given in millimetres while the rest of this shelf works in microns, so the two figures cannot be read side by side without converting them yourself

   Best for: Buying a bivvy bag on a published film thickness rather than on a picture of one.

   ≈ 11 €

   Check price on Amazon
7. 

   E EASTSTORM four-layer emergency blanket set with rain poncho, 210 × 150 cm, 600 g stated

   A four-layer laminate at the far end of this shelf from a foil sheet: 210 × 150 cm, 600 g, a folded size, a poncho in the set, and no colour named for either face.

   Unfolded dimensions

   210 × 150 cm — stated in the title and repeated in the bullets; the rain poncho in the set is stated at 130 × 100 cm

   Material

   A four-layer construction — non-woven fabric and polyester fabric combined with an aluminium-Mylar coating, stated by the maker

   Film thickness

   Not published on the listing — the maker states four protective layers and gives no micron or millimetre figure for any of them

   Stated weight

   600 g — stated alongside the folded dimensions

   Packed size

   24 × 18 × 5 cm folded — stated by the maker

   Reusable

   Not published on the listing — the maker says it is more durable and less easily damaged than a conventional single-layer Mylar bag, without stating that it packs away again

   Colour of each face

   Not published on the listing — the maker describes what each side is for and calls the colour close to natural, without naming a colour for either face

   Amazon reference

   B0B3WTCSF3 (same reference on 6 Amazon marketplaces)

   EAN

   0768477243015

   • Names all four layers of the construction, which no other listing in this family attempts
   • Publishes the unfolded size, the folded size and the weight together, so the whole bulk of it is known before ordering
   • The heaviest of the four here that publish a weight, at 600 g against 60 g and 120 g elsewhere on this shelf

   Best for: A bulkier laminate for a car boot or a base kit, where 600 g is not the deciding number.

   ≈ £23 / 22 €

   Check price on Amazon

This family belongs to the walking and light kit — see everything that has to work with it.