Rain is rarely the problem; your own moisture usually is · review
ORTOVOX Bivy Ultralight review
A two-person emergency bivy that publishes the two figures its name rests on — 150 g (5.3 oz) and a 5 × 5 × 9 cm (2 × 2 × 3.5 in) packed size — and names no fabric at all.
A flat emergency bivy in shocking orange, stated at 235 × 110 cm (92.5 × 43.3 in), with a silver coating on the inside, a published weight of 150 g (5.3 oz) and a published packed size of 5 × 5 × 9 cm (2 × 2 × 3.5 in).
Why the two published figures matter
An emergency bag is carried for years and used once. That makes packed size and weight the specification, because they decide whether it stays in the pack at all. This is one of the few listings in the hub to publish both, and 5 × 5 × 9 cm (2 × 2 × 3.5 in) is small enough to check against a lid pocket.
What it does not publish
No fabric, no denier. The silver coating is named; what it is coated onto is not.
No hydrostatic head, no breathability figure. Both are absent, and the second is the one that governs condensation inside a sealed bag — twice over when the maker states the size suits two people.
No closure. Nothing is said about how the bag is entered or shut.
Before ordering
This is an emergency item, not a shelter you pitch. The hooped and laminated bags in this hub are a different purchase.
Availability
The American Amazon catalog lists it with no seller standing behind the entry.
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
Publishes both the weight and the packed size, which is what an emergency bag is actually carried on
235 × 110 cm (92.5 × 43.3 in) is the largest cut in this hub, and the maker states it takes one or two people
A 5 × 5 × 9 cm (2 × 2 × 3.5 in) packed size is small enough to be checked against a lid pocket before ordering
Compromises
Names no fabric and no denier, so there is nothing to compare against the laminates further up the hub
No hydrostatic head figure behind the word waterproof
No breathability claim, which on a coated bag decides how much of your own moisture stays inside
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
United States
Specifications
Fabric
Not published on the listing — a silver coating on the inside is stated, the base fabric is not named
Denier
Not published on the listing
Hydrostatic head
Not published on the listing — the bag 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, 235 × 110 cm (92.5 × 43.3 in), stated to suit one or two people; no pole or hoop is listed
Entry and closure
Not published on the listing — no zip, hood or drawcord is described
Packed size
5 × 5 × 9 cm (2 × 2 × 3.5 in) — stated
Weight
150 g (5.3 oz) — stated; the listing does not say whether that figure includes the stuff sack
Amazon reference
B076DJQNYX
EAN
4250875271029
What people ask before buying
Is 150 g (5.3 oz) the whole thing?
The listing gives one number and does not label it. Whether the stuff sack is inside that figure is the sort of detail that separates two bags on a spreadsheet, and the maker does not settle it.
Can two people really use a 235 × 110 cm (92.5 × 43.3 in) bag?
The maker states the size suits one or two, and 110 cm (43.3 in) of width is the widest cut here. What the listing does not publish is any breathability figure, and two people inside a sealed bag produce twice the moisture — that trade-off is unstated.
Does ORTOVOX publish a fabric?
No. Not published on the listing — a silver coating on the inside is stated, the base fabric is not named. What the listing does publish instead is the weight: 150 g (5.3 oz) — stated; the listing does not say whether that figure includes the stuff sack.
Our score
7.8/ 10
The emergency bivy that answers the two questions you carry it on, and none of the questions you would sleep in it on.
The buyer this one serves, among camping gear
A group kit or a day pack where the smallest packed emergency shelter for two is the requirement.
What buyers actually choose
Amazon reports what buyers took in the month before this page was last checked: at least 200.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
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.
Emergency bag · sold as a pair · PE film with aluminum-coated inner · 213 × 91 cm (83.9 × 35.8 in) · 115 g stated · 120 dB whistle
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.
Best for: A kit where a named material and a published weight are wanted from an emergency bag.
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.