By Will Rietveld
This hyperlight smock
is the lightest rain top in the world, it’s flawless, and lands on my list of
favorite gear for ultralight backpacking.
This is
the lightest rain jacket in the world. It’s even lighter than a breathable Cuben Fiber
rain jacket, which weighs around 6 ounces (and costs twice as much).
The new Berghaus VapourLight Hyper Smock 2.0, at 2.65 ounces for size men's medium, is the lightest rain top in the world. Its available in men's and women's versions. (Berghaus photo) |
The original VapourLight Hyper Smock, a pullover style, came
out in 2014. Only a year later it was replaced with the Hyper Smock 2.0 in
2015. Berghaus redesigned it and made it lighter yet. According to Berghaus,
the weight dropped from 100 grams to 75 grams (3.5 ounces to 2.65 ounces for a
size Medium).
Now it is also available as a jacket (with a full height
front zipper) weighing 3.5 ounces (size Large).
Obviously the fabric on this rain jacket is very thin, so the key questions to address in this review are whether this jacket provides
sufficient rain protection, breathability, and durability.
Specifications and Features
Manufacturer
|
Berghaus (http://usa.berghaus.com/)
|
Product
|
VapourLight Hyper Smock 2.0 (men’s and women’s versions)
|
Fabric
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Hydroshell™ Hyper; 10,000 MVTR, 15,000 mm waterproofness
|
Weight
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Manufacturer spec 2.65 oz (men’s Medium; measured weight
3.2 oz (men’s XL)
|
Features
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Attached fitted hood; elastic binding on hood, cuffs, and
hem; tie-back on hood; 16 in front zipper; 1 front pocket; dropped tail;
stuff sack included
|
MSRP
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$150 (pullover style), $155 (jacket style)
|
Description
I had the opportunity to test both the original Hyper Smock
and the latest version 2.0, and I definitely prefer version 2.0. The most
obvious difference is the location of the pocket; it was on the left sleeve on
the original, and now it is just below the front zipper. Berghaus cleverly uses
one zipper with two pulls and added a bar tack to create two openings: one for
the pullover entry and one for the pocket. The lower pocket is more convenient
and larger than the original sleeve pocket. It's 9.5 inches deep at the top tapering to 7.5 inches deep at the bottom, which is large enough for small clothing items or a camera.
However, the weight savings goes deeper than the pocket.
Version 2.0 drops two mini-cordlock hood adjusters, uses thinner seam tape,
uses a different panel design to reduce seams, uses lighter weight elastic
bindings, and shortened the zipper one inch – a lot of subtle changes
throughout the garment.
An important detail that you need to know about the Hyper
Smock is that it runs about one size small. I tested the original in size Large
(my usual size) and found it fit more like a Medium – the body is a trim fit
that barely layers over an ultralight down jacket, but the sleeves are
adequately long. So, I got version 2.0 in size XL and I am much happier with
the fit – it is easier to donn and layers nicely over a lightweight down
jacket. Bottom line, you need to go up one size for a good fit. If you do that,
the pullover style is not that hard to put on.
Some hikers will prefer the jacket version of the
VapourLight (with a full-height front zipper) because it’s easier to put on and
provides more ventilation by adjusting the zipper. However, note that the
jacket version does not have a pocket.
Field Testing
Berghaus’s Hydroshell™ Hyper waterproof-breathable fabric
technology was developed in their own Mountain House Design and Development Center. Its waterproofness rating of
15,000 mm is adequate. The breathability rating of 10,000 MVTR is at the lower
end for a waterproof-breathable rain jacket, equivalent to a typical
polyurethane laminate rain jacket. What is remarkable is that they achieved these
properties in a very thin nylon fabric construction.
As rainwear, its intended use, the Hyper Smock does the job
just fine. I live in the Southwestern US,
where rain usually comes as showers rather than an all-day rain. The longest I
wore it in the rain was a steady drizzle for a half day in the Grand Canyon, and it kept me dry.
I also wear my rainwear as a shell layer over my insulating
layer in camp and in my sleeping bag. Its remarkable how well an outer shell
holds the heat in to keep me warm and comfortable with less total weight. The
Berghaus VapourLight Hyper Smock works very well for that purpose, and it
doesn’t feel clammy inside in camp or in my sleeping bag because I am inactive.
Because it’s made of very thin fabric, the Hyper Smock can
be expected to be less durable than heavier rainwear. However, nylon is very
strong and surprisingly resistant to damage. Even so, all ultralight gear
requires extra care, and if you treat it right it will last a long time.
Assessment
There are two contrasting situations requiring different
types of rainwear: 1) for wetter climates, choose highly breathable air
permeable rainwear for maximum comfort in prolonged rain, and 2) for drier
climates, choose the lightest reliable rainwear you can find and wear it as
needed. In the former situation, these jackets are heavier, expensive, and
require maintenance to sustain their performance. In the latter situation, the rainwear
is much lighter weight and less expensive, requires little or no maintenance,
and breathability is less of a need because you typically wear the rainwear for
a short time.
Besides this, an inconvenient truth about rainwear is that
all rainwear will steam up inside if you are hiking uphill carrying a pack in
warm temperatures. The difference is that air-permeable rainwear will allow you
to hike further before it steams up. The end result in every case is you will
gradually get wet from the inside.
The Berghaus VapourLight Hyper Smock fits in the second
situation. It adds very little weight to your pack, and it performs admirably
when it’s needed. If you are a lightweight or ultralight backpacker, this is my
recommendation for rainwear.
Overall I have nothing but praise for the Berghaus
VapourLight Hyper Smock, meaning it’s all good and I don’t have any
reservations at all. It performs just fine as a rain jacket, especially in
shorter duration showers, as good as any other polyurethane-laminate rain
jacket, and it does it with minimal weight. Its extreme light weight also makes
it more versatile – it’s more packable, doubles as a windshirt, and it’s an
effective outer shell layer to keep you warm in camp.
In my 12 years of gear testing I have found very few perfect
pieces of gear, and this is one of them. I suppose one negative is that it runs
one size small, so you need to size up to get a good fit. That adds a smidgeon
of weight, but it’s still the lightest rain jacket in the world.