Rain is rarely the problem; your own moisture usually is · review
Backpacker’s Journey emergency bivy bag review
An emergency survival bag sold in twos with a whistle sewn in — it names its film and gives a weight, and publishes nothing about breathability or closure.
Two emergency bags, stated at 213 cm (83.9 in) long and 91 cm (35.8 in) wide, with an aluminum-coated inner face, a tear-resistant PE film outer, and a whistle published at 120 dB.
The figures it does publish
115 g. A weight, which two thirds of this hub does not give at all. What the listing does not say is whether the figure is for the bag alone.
213 × 91 cm. The maker states the size is enough for two people to share in an emergency.
A named material. PE film outside, aluminum coating inside. That is more than the silvered inner face other emergency bags describe without naming anything.
What it does not publish
No hydrostatic head, no breathability figure, no seam treatment, no packed size, and no description of how the bag closes. On a film bag the first two follow from the material; the last two do not, and their absence is the listing’s own choice.
Before ordering
Note that the price covers a pair, and that the whistle is part of the bag rather than a separate item.
Availability
The American Amazon store returned nothing, so the buy link opens a local search rather than a page that is not there.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
What it does well, and where it gives way
Strengths
Names the material on both faces — PE film outside, aluminum coating inside — which most bags at this level do not
Publishes a weight, 115 g (4.1 oz), and the cut size of 213 × 91 cm (83.9 × 35.8 in) alongside it
A whistle is built in and its output is published as 120 dB, so the claim is checkable rather than decorative
Compromises
No packed size, so the figure that decides whether it stays in the pack is missing
No breathability figure and no claim of one, which on a film bag is the specification that matters most
No closure described at all, so how the bag is entered and shut is unknown before it arrives
Where this model is listed
A listing is not an offer: the reference exists on these stores, availability changes daily.
France
Germany
Italy
Spain
United Kingdom
Specifications
Fabric
PE film outer with an aluminum-coated inner face — stated
Denier
Not published on the listing — the outer is described as a PE film rather than a woven fabric
Hydrostatic head
Not published on the listing — the film is called waterproof, with no millimeter figure
Breathability figure
Not published on the listing — the listing makes no breathability claim at all
Breathability test named
Not published on the listing
Seam taping
Not published on the listing
Construction
Flat bag, 213 cm (83.9 in) long and 91 cm (35.8 in) wide — stated; sold as a pair, with a 120 dB whistle built in
Entry and closure
Not published on the listing — no zip or hood is described; the maker states the bag can be re-packed and reused
Packed size
Not published on the listing
Weight
115 g (4.1 oz) — stated; the listing does not say whether that figure covers the bag alone or the bag as it is supplied
Amazon reference
B09V2MDQHZ
EAN
4260619851370
What people ask before buying
Why does a film bag publish no breathability figure?
A polyethylene film is not a membrane and the maker claims nothing for it. That is worth reading plainly rather than as an omission: the listing does not pretend otherwise, and the hub’s breathable laminates are a different product at a different price.
Does the 115 g (4.1 oz) figure include anything else?
The listing does not say. It gives one number without labeling it, which is the recurring problem across this niche — a packed weight and a bare weight can differ by more than the margin people shop on.
Does Backpacker’s Journey publish a denier?
No. Not published on the listing — the outer is described as a PE film rather than a woven fabric. What the listing does publish instead is the weight: 115 g (4.1 oz) — stated; the listing does not say whether that figure covers the bag alone or the bag as it is supplied.
Our score
7.8/ 10
The emergency bag that says what it is made of and what it weighs. Everything a shelter bivy is judged on is still absent, and that is the honest reading.
The buyer this one serves, among camping gear
A kit where a named material and a published weight are wanted from an emergency bag.
Sources
Specifications: the manufacturer sheet for camping and hiking gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
One-person bivy shelter · two aluminum poles · PU 5000 mm (196.9 in) flysheet · sealed and double-stitched seams · 215 × 75 × 61 cm (84.6 × 29.5 × 24 in) · 1.3 kg complete, stated
A poled one-person shelter sold as a bivy, publishing a flysheet water column, sealed seams and a complete-set weight — with no fabric named and no breathability figure.
Best for: A solo pitch where head room and a sealed floor matter more than packing small.
Sleeping-bag cover · 3-layer laminate · 5,000 mm (196.9 in) water column · breathable membrane, no figure · 225 × 85 cm (88.6 × 33.5 in) · 1,300 g and 40 × 8 cm (15.7 × 3.1 in) packed, stated
A generously cut laminate cover that publishes its water column, its packed size and its weight — and calls its membrane breathable without ever putting a number on it.
Best for: A cover bought for cut and closure rather than for weight, over a bulky synthetic sleeping bag.
Sleeping-bag cover · 3-layer Gore-Tex · polyamide face and lining, PTFE membrane · 243 cm (95.7 in) long, 98 cm (38.6 in) shoulder · central zip · no weight or packed size
A 3-layer Gore-Tex cover that names every layer of its construction and publishes neither a waterproof figure, a breathability figure, a weight nor a packed size.
Best for: A winter sleeping bag that needs a long, wide cover and where the membrane name is the specification being bought.