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Gravitas [Mens] ultralight waterproof jacket

Alpkit Gravitas super lightweight mens waterproof jacket


  • Apple - Alpkit Gravitas super lightweight mens waterproof jacket
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Ultralight waterproof jacket for fast-paced running, riding and racing: a barely-there-barrier for ultimate wet weather freedom

SALE: £139.99 Was: £159.99

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  • Full Description
  • Features At A Glance
  • Care & Environmental Advice
  • Size Guide
  • Customer Reviews
  • Kudos

Lungs heaving, legs screaming, steam billowing: head tilted into the pummeling rain, back bent into the dreich monotony of the climb. And then you’re out: racing along ridges, feet flying over the terrain, rain bouncing off you in all directions and relishing the grim satisfaction of just getting out, regardless of the weather.

Waterproofs weighing you down? Throw off the shackles and throw on the Gravitas. Designed for minimalist mountain raids where breathable protection and maximum agility are key. Feather-light and packing down into its own pocket-sized stuff-sack, throw it in your race vest for fell runs, squeeze it into seatpacks for bare-bones bikepacks, or even clip it to the back of your harness when the weather’s looking iffy. 

The Gravitas is one of the lightest 3-layer waterproof jackets available - a mere 170 grams for the Men’s medium. 3-layer fabrics are much more durably waterproof and breathable than 2 or 2.5L fabrics, and we’ve used an ultrafine 7 denier nylon to sandwich the super thin PU waterproof membrane, keeping you as light on your feet as possible. 

With 30K MVTR breathability and 20K HH waterproofing, the Gravitas has all the performance you need to keep you warm and dry for sweaty workouts in hostile weather. It’s a dream to move in too with a quiet and supple fabric that’s comfortable next to the skin, the soft tricot knit backer eliminating any cold clamminess. 

The large hood with a stiffened wired peak has a simple rear adjuster and a semi-elasticated opening so you can yank it on in sudden downpours without stopping to undo your zip. The cuffs are cut to protect the backs of your hands and feature semi-elasticated openings for comfort. It’s also been designed with minimal seams and no visible stitching throughout to reduce snag and wear points, including on the ample-sized hidden chest pocket. 

Best In Test Winner - UKClimbing.com and UKHillwalking.com: “Worlds apart comfort... super-light and very breathable, the Gravitas manages to balance minimalism with functionality” 

"All in all, an excellent, no-nonsense, shimmering shard of lightweight loveliness" - Outdoors Magic 

Key features
  • Ultralight 3 layer construction uses 7 denier outer and inner fabrics and a super thin PU membrane, allowing it to pack up small into its own stuff sack
  • Highly breathable and waterproof fabric (30K MVTR and 20K HH respectively) for high intensity activities in wet weather
  • Protective hood has a wired peak and a rear adjuster to stay secure in winds, plus an elasticated opening to pull on and off easily
  • Tricot knit backer is comfortable next to the skin and the supple 47 gsm fabric is quiet and easy to move in
  • Semi elasticated cuffs are cut to protect the back of your hands and the hem is secured by two adjusters
  • Minimal seams reduce seam taping and lack of visible stitching reduces snag and wear points
  • A hidden chest pocket is large enough to fits hats, gloves and maps
  • YKK Aquaguard front zip, protected by a minimal storm flap
  • 3 Year Alpine Bond
Vital stats

47 gsm 3 layer fabric
Face Fabric: 7d nylon
Backer Fabric: 7d nylon tricot
PU membrane
Fully Taped Seams (FRA approved)


Hydrostatic head: 20,000 mm
Moisture Vapour Transfer Rate: 30,000 g/sqm/24hrs (minimum)


S: 165 g; M: 170 g; L: 180 g; XL: 185 g

Origin: China

Environmental Considerations

We treat all our waterproofs with PFOA-free DWRs, cutting out some pretty nasty chemicals. Unlike our insulation and sleeping bag ranges, our waterproofs are not yet PFC-free. We’re still looking for a PFC-free DWR that’ll provide the same long-lasting performance for waterproofs, but we are working on it!

We make gear you’ll love for longer: gear that lasts; gear you’ll use, repair, re-use and pass onto someone else when you’ve finished with it. That’s why all our products have a three-year Alpine Bond warranty as minimum. We’ve always thought that the most environmentally friendly product we can make is the one that gets used the most and lasts the longest. So that’s what we do - it’s pretty simple really.

Product Care Information

The better you look after this jacket, the better (and longer) it’ll look after you. Well, when we say ‘look after you’... it’s not gonna make you cups of tea or bring you breakfast in bed, but it will keep you nice n’ dry. And the good news is: it’s dead easy to do.

1) After you’ve finished going nice places and doing good things, treat your jacket to a wash at 30°C with either a dedicated Tech Wash (like Grangers and Nikwax) or pure soap. This keeps your jacket breathable by stopping the Durable Water Repellent (DWR) coating from getting clogged up with dirt and skin oils. No one likes a sweaty, clammy jacket.

2) If it’s stopped beading (rain soaking in rather than forming droplets), you can reactivate the factory-applied DWR by sticking it in the tumble drier on a low setting or applying a cool iron to it (under a tea towel).

3) To keep your jacket beading, you’ll probably need to top up the DWR once or twice a year using a Grangers or Nikwax re-proofer. You can find out more about why this is important here.

If you’re still a bit unsure about washing your jacket, you can also take it/send it to our Ambleside store’s waterproof washing service and we’ll sort it all out for you.

Size chart Waterproof Jackets Mens
Men's waterproof jacket sizing chart
Chest (inches) 37" 40" 43" 46" 49"
Waist (inches) 30" 32" 34" 36" 38"
This size chart indicates the body measurements our garments are designed to fit. Measure yourself as described below, and use the size chart to find your size.
Chest: measure around your chest at the widest part. The tape measure should pass under your arms, and be level from front to back.
Waist: measure around your waist at the narrowest part.
Hips: standing with your feet together, measure around your hips at the widest part.
What You Say: Customer Reviews and Comments

20 Reviews


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Diethelm Matthias
As waterproof as a duck

I'm a camping backpacker and need to watch my pack weight. This jacket is the perfect thing. I'm on the small side of medium so small is too tight if I'm wearing anything underneath so I always go for medium size jackets. I wanted a light waterproof jacket for winter conditions and planned on using my Phantac underneath so I got the large size which just about does the trick. And I even managed to get a light hoodie under the phantac at the same time so this rain jacket will in fact do what I intended in the winter. It was raining on the day that it came through the post so I went for a half hour walk in the rain. It was so comfortable and light I almost forgot I had it on. The zip with no flap looked a bit suspicious, I thought it would fail to water intrusion so I tested it under the shower. It was unbelievable as not a drop got through. I have notice that the fashion today with most jackets is for people to walk around with exposed butts. I don't like this trend at all but I'm a bit on the short side so medium and large in particular give me good hop coverage. All the better for rough and cold conditions. The material on this jacket is just great, and I would like to see a down jacket or a sleeping bag made out of it.

Gravitastic: A brilliant addition to my running wardrobe!

I recently purchased the Gravitas for trail running and some mountain running. I generally wear a medium but found that the large fitted well, allowing, when needed, a few layers underneath up to and including a down jacket, without feeling stretched, whilst at the same time with only a t-shirt underneath not feeling flappy and loose.

I must say I love it, I bought it in steel and love how it looks and I'm delighted with the fit. I have worn it a few times running on trails and it feels good, breathability is great and I have yet to experience a drop of water make it through. I had it up the Mournes the other day also, it packed easily in a 5l hydration backpack. I reached a saddle between two peaks and it was windy and cold, I threw on the Gravitas and as a wind-proofing layer it was great, it even bought me a few more minutes at the peak.

When I wear it, it feels like I am wearing something of true quality that does what it says, keeps water out, is breathable, and has a decent degree of windproofing and definitely not like I'm stuck in a plastic bag. I also have to say, wearing the jacket makes me feel like I should be out conquering trails: genuinely delighted with it!

Very nice for lightweight adventures

I've used my gravitas for nearly two years now and I'm very pleased. I've used it for cycling and for hiking/backpacking. It packs down very small and it keeps the weather out. I find that reproofing frequently keeps the DWR working at its best, and it literally takes 5min to do by hand in a small bucket.

edward dalton
I ran in it, it worked.

So, bought the gravitas as i wanted a light waterproof jacket that didnt make me sweat. The Gravitas is a brilliant design with min attachments which makes things easy. Its got a zip and a draw cord for the hood and torso base line, brill and it works. Ive run quite a few miles in it now in rain mist heat you name it and i a score of 9/10 as there is always something more you can improve on.
Well done Alpkit.

edward dalton
It does


Bought the gravitas today, ran out within 1hr of the purchase. OMG it does what they you Alpkit says it does. I felt amazing running out over the moors tonight, felt so much more comfortable with the correct gear. Ive put a live BLOG on my page to review the gravitas as i used it. All in all i give the gravitas a five star rating.

Light, simple and functional.

It works well. XXL fits me well. I'm 115 kilos, 180cm, wide shoulders, big chest and also a bit of waist. It fits snugly, but not tightly.

It seems waterproof, we got a rainstorm hiking in norway. We went into the tent after maybe 30 minutes, but it repelled the rain well.


Used for walking and hill running. It was bought as a replacement for a much loved minimal (one might say ....mus) waterproof that died of de-lamination. That jacket was v good, but this is better. Great fit. Fabric feels nice. Clever hood (hasn't blown off so far). 100% waterproof in moderately unpleasant wind and rain. Not faced a prolonged torrent to date - but here's hoping!


This is an amazing top for the price. Packs down small! Great on the bike. Hills and pub.


Really great jacket! Super lightweight and breathable. Not tested it under heavy rain jet, but i'm confident that it will do its job!
Im 195cm tall, 88kg (wide shoulders). Initially ordered L size, but it appeared bit too small for my purpose (endurance road cycling). Exchanged it for XL and now its great fit and will accommodate warm fleece under it.
And yes - customer service is outstanding!
Thanks Alpkit! smile

Really great jacket!

I bought this jacket last summer as a lightweight jacket to carry in my bag.

The Gravitas looks great, weighs nothing, packs down very very small (the gravitas jacket along with Alpkit’s parallax waterproof trousers fit into one small stuff sack) and is properly waterproof unlike the other minimalist jackets I am aware of anywhere near this price.

The fit is great and while saving weight and bulk everywhere, the jacket still has the features you really need (wired, adjustable hood, elasticated cuffs, good sized single pocket, good zip and adjustable waist)

Although I bought the jacket for summer emergency use, I have used this jacket for cycle commuting all the way through the year and also found it to be the perfect jacket for ski touring on warmer days.

Dave Arnett
Great Addition

Can't fault this jacket really. It's so lightweight but durable, windproof and of course waterproof. Had it in the rain all day and it held up great.


Bought this recently to use as a super lightweight adventure racing jacket.
It fits my large frame well. Arm length and jacket length are perfect. I particularly love the cuff design. The hood is really great too. Again the design touchs work really well providing simple solid protection.
I used mine on a very wet and windy Lakeland day and found it kept me dry and more importantly I didn't feel clammy. That's something else.
Overall, great jacket, super lightweight and thoughtful design and great value make this a really Brilliant jacket.
Well done Alpkit (again)!

Paul S
Perfect cut

Bought as a lightweight jacket for backcountry cycling adventures that doubles as light tramping jacket. Owned for a month now and, it being winter in NZ, it's seen quite some rain.

The cut is perfect - long sleeves and tail, and fitted enough so there's no stomach bagginess when on the bike. Ideally they'd be a velcro tab to roll the hood up and stop it flapping, but I can live without one, or add one myself. The hood works brilliantly too, no drooping over eyes.

Material sheds water and doesn't rustle. Nice. For regular riding it's kept me totally dry. Being able to push the sleeves right up is a neat touch. I have found the limitations of waterproofing though. A 5 hour tramp in constant rain, carrying a full 40l pack saw water seep through to the inside the shoulders and back where the pack was. There wasn't much, and I wasn't wet underneath, but the inside of the fabric was damp. I'm assuming it wasn't condensation as it was blummin' freezing and I wasn't working hard (an easy walk with kids). But I'm putting it down to finding the limits of a jacket not really designed for that level of pack-carrying or NZ rain. I was expecting to find water had got through the zip, as it doesn't have a storm flat. But nope - all dry there.

So. Great jacket, very very happy. I'm now adding a Balance for those days when I need something heavier.

Great Garment

I am new to Alpkit products, but I have become a big fan of their ethos, service and product quality. The Gravitas jacket is fantastic, with an unbeatable combination of function, weight and price. I am a 80kg male, with 42" chest. I bought the large size, which will be fine for 3 season use, over a single layer. For winter use over a base layer and fleeces etc., I might have chosen XL.

Gravitas 1st use

SIzing is on the athletic/ slimmer side so suited to wearing over lighter weight clothing rather than thicker fleeces etc. Consider this on sizing when buying.
Hood well designed and cinches nicely with a single draw chord to the back of the head, wired peak works well to keep eyes and vision clear.
Personally feel it could do with a slightly longer back or overhaul lower hem, but this a minor gripe.

What do you do with the hood?!

Hi all, I'd like to wear my Gravitas more than I do - but - when running (it's main use) with the hood down, how do you stow it! Here (NE Scotland) hill days are normally pretty windy - though often I prefer having the hood down (except during down pours) so the question is....how do others stow the hood to prevent it popping out and flapping around your head during a run? it's almost a deal breaker now if I can't find a solution - other than that the jacket is great! Any tips please Alpkit?

Andrea Gattonero
Almost perfect, needs minor improvements

the Alpkit Gravitas is a very good waterproof jacket that will work well in many situations, either outdoor and in town, due to the discreet look.
I like the material, it is not noisy like many "WPB", it is waterproof and though wicking is always limited on those materials, it does not get too much condensation especially considering there are no vents.
And here is the first improvement I'd like to see, minimal pit-vents under the arms, thin and narrow velcro opening with mesh underneath, that would not add weight and hardly any bulk.
On the same line, the chest pocket is very good but the interior should be mesh fabric, given the position of the opening it could be a good venting option if the inside of the pocket was made out of mesh.
The fit is nice and follows the body well on the average-build bloke, the arms are long enough (yay!) and the cuffs are perfectly sized, though a longer back hem would be appreciated.
The hood is simple and effective, though not useful if you're using the jacket on your Mtb rides: the jacket fits well and does not really restrain the movements (ok, it pulls a little between the shoulders, but not too much) but the hood won't fit most of the helmets. Also no means to secure the hood in place.

-quiet and comfortable to wear fabric
-waterproofing and breathability are good
-well positioned chest pocket
-excellent arm length and cuffs
-trimmed fit
-very light
-nice choice of colours, some are really visible without being "in your face"
-good value for money

-no venting options (by the chest pocket or pit-vents)
-the hood is useful but would need some means to keep it in place
-for ease of packing, the hood should have a synthetic peak not a wired one
-no useful reflective points on the fabric, should have some in the arms and the back!
-could do with a 2-3" longer back hem

In a nutshell: would I buy it again? Yes, it is good value for money and being so light &small; when packed, can be used in many occasions.


I get it, the fit was nice here, the hood was comfortable, the fabric wasn't noisy, seemed waterproof, handled a shower etc etc...
Lets just go back to basics for a minute; if you go out running, in rain, heavy rain, horrible rain, miles, mountains, moors, lanes, when you get back home, or to your car, you peel your kit off and it lands with a slushy splat at your feet. You are totally soaked, from rain, from perspiration, and it's nice. The only place you're heading to is straight for a shower. Nobody is taking off this jacket to reveal a shirt and tie, ready to give a presentation at the office. So please, if you're using this to run in the rain; wetted out? - absolutely, waterproof? - nobody could ever know, you and it are utterly soaked inside and out from rain and perspiration, breathable?.......pleaaaaase!

Chris Gowler

What a waste of money. I have cheap rain jackets that beat this hands down, and for £140+ don't buy it.
Went out for a walk with the dog in the rain to try it out one hour later came back, damp across the shoulders.
Would I trust it on the hills carrying a back pack in the rain, ABSOLUTELY NOT.
I realise that now I have worn it I cannot return it so it will go in the draw with all the rest of the rubbish kit I have bought over the years.
P.S. I bought this a pair of parallex waterproof trousers, they are worth the money.

Yours with no further orders

Chris G

Simon Kelly
Very disappointed (again)

I’ve had one of these in the bottom of my rucksack as a back up item for a while. I recently used it in steady rain for the first time and it simply couldn’t keep it out. The fit and cut are great but I believe that the material isn’t. By comparison, I have a slightly heavier Rab jacket made from stretch pertex which is 7 years old and still keeps the rain out for hours despite some heavy usage. The title of the review is down to the fact that my wife has had the same experience with her definition jacket - fit great, fabric performance disappointing.


Hi Simon, I’ve dropped you an email to determine whether you are experiencing ‘wetting out’ of the material (which should be solved by reproofing) or whether there is another issue at play. Thanks, Ashleigh

What They Say: Kudos - Product Reviews from independent magazines and websites

Outdoors Magic Review Gravitas

Oli Reed reviews our Gravitas waterproof for Outdoors Magic.

As ever from Alpkit, the Gravitas is a well designed lightweight and packable waterproof jacket that does everything you’d expect at a bargain price. For the impressive weight of 170g, you get a decent feature set with a wired and adjustable hood, zipped chest pocket and adjustable hem. You also get a supplied stuff-sack that allows you to crush it down to roughly the size of a large orange and pop it in your backpack until you need it. The 3-layer material doesn’t feel too thin for a jacket this light and although we’d probably have preferred a little more coverage below the waist, in use the Alpkit Gravitas felt great and performed well on both hikes and trail runs in the wind and rain. Alpkit describe it as being designed for ‘running, racing and fast & light adventures’ and although we’d agree with that it’s probably at its best for running and cycling, it also doubles up as an excellent back-up waterproof layer for hiking in spring and summer. Walkers would probably like an extra pocket and adjustable cuffs to complete the feature set, but maybe we’re just being picky, Pros Tough 3-layer fabric, low weight, great packability, adjustable wired hood and hem, supplied stuff-sack Cons Just a single pocket, no cuff adjustment

Outdoors Magic

Outdoors Magic January 2020 - Oli Reed

OM Gravitas Review

the Gravitas is simply a really, really good lightweight waterproof shell full stop

Outdoors Magic

Outdoors Magic November 2016 - Outdoors Magic

Grit.cx checks out Gravitas

Alpkit have added a range of waterproofs to their direct-to-consumer website. All are good value ..... Gravitas jacket is their super lightweight option though. It is not a bike-specific jacket, but ticks the boxes that I’m looking for. It comes with a fully featured hood, which will fit over a climbing (or riding) helmet, three layer breathable waterproof fabric, a chest pocket, a little mesh stuff sack… and little else

Tom Hill, Grit.cx

Grit.cx July 2016 - Tom Hill

Outdoors Magic Gravitas Review

The Alpkit Gravitas is not only great value for money, it’s one of the best lightweight jackets on the market


Outdoors Magic August 2017 - Outdoors Magic

Best in Test

UKH/UKC Gravitas Review

UKH/UKC Winner - Best in test

Super-light and very breathable, the Gravitas manages to balance minimalism with functionality


UKH/UKC August 2017 - UKC/UKH Gear

Off-road.cc Review the Gravitas

as perfectly suited for being stowed for emergencies or used frequently as a minimalist jacket for fast moving days.


off-road.cc February 2018 - Jim Clarkson

Gravitas First Impressions

despite the super competitive £120 price-tag, this is anything but a budget effort

Outdoors Magin

Outdoors Magin June 2016 - Jon Doran

Aleks Wears Gravitas Across Europe

Travelling light and fast and putting a waterproof through plenty of miles

Aleks Kashefi

Aleks Kashefi February 2017 - Aleks Kashefi

Gravitas Full Review

Gravitas is light without feeling flimsy, has good levels of breathability and waterproofing and has been nicely put together from an impressively light three-layer fabric and its hood is quietly brilliant

Outdoors Magic

Outdoors Magic June 2016 - Jon Doran

Wanderlust Bust Buy

Gravitas awarded Wanderlust Best Buy

Super light, super waterproof, super breathable.


Wanderlust February 2019 - Phoebe Smith

Nicky Spinks reviews the Laika and Gravitas

it is never out of that wash / dry / wear / repeat cycle

Nicky Spinks

Nicky Spinks February 2017 - Nicky Spinks

Chris Townsend Gear of 2019

Passionate hillwalker, lightweight aficionado and gear editor of TGO magazine, Chris features our Woodsmoke and Gravitas in his Gear of 2019 selections.

An alternative to a microfleece jacket or pullover the Woodsmoke shirt is a soft, warm shirt made from stretchy hollow fibre polyester. It has big pockets and stud fastenings so it's easy to adjust. The material is fast wicking and drying

Chris Townsend

For the Colorado Rockies I took this ultralight 165 gram waterproof, hoping it wouldn't be needed much, if at all. In fact in the second half of the walk I had many big thunderstorms and several days of almost constant heavy rain so it was worn a great deal. Happily it performed really well.

Chris Townsend

Chris Townsend January 2020 - Chris Townsend

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