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Assos iJ.shaqUno Jacket



Excellent cold-weather jacket provides impressive warmth with great fit and comfort

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The iJ.shaqUno jacket from Swiss company Assos might have a daft name, but it provides outstanding warmth on those mornings when the cold has the neighbours scraping thick frost off the windscreens of their cars as you set off up the road for a ride.

The iJ.shaqUno provides impressive cold weather warmth due to the two-layer design, which manages to provide insulation without a lot of bulk. Assos calls it 'double-face construction' and it means the company's own RX material, which is soft and fleecy, is used next to the body, while the outer windproof shell is only attached to the inner layer in key places.

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The outer layer is also slightly larger. What this does is create a large pocket of warm air between the two layers that keeps you toasty when it's really cold. Assos reckons the jacket is good down to -4°C, and on a couple of sub-zero rides I tested the jacket in, it lived up to that claim, even with the recommended single baselayer underneath.

The two-layer construction does create a slightly puffy appearance on the arms, and it's a little crinkly too, but it's not noticeably noisy when riding. The upshot is total freedom of movement for you, as the outer layer moves freely too. It also means the jacket feels lighter and less restrictive than other bulky winter jackets I would normally reach for in the cold.

Assos iJshaqUno Jacket - riding.jpg

The jacket works well in a range of conditions and temperatures. Despite wearing just a single baselayer, there's enough warmth for colder days. And when the temperature increases, a change to a lighter, or short sleeve baselayer is all you need.

As well as being windproof, the outer shell has a water-repellent treatment. Rainwater just beads off the surface, and it's enough to look after you in a shower.

Assos iJshaqUno Jacket - sleeve logo.jpg

I found the jacket really comfortable for long winter rides. It has a good shape around the shoulders and torso, and the medium measures up well compared to other brands. The rear drops down to keep your lower back covered, and the arms are a good length as well. It's just a really comfortable jacket with no tightness around the arms, elbows or waist when moving about on the saddle, such as going from a seated to a standing position.

> Check out our guide to the best winter cycling jackets here

It features the usual attention to detail you'd expect from a company that has long been the go-to choice for premium high-performance cycling wear. A smooth operating full-length zipper has a decent sized toggle to grab when you're wearing thick winter gloves, and the zip is lined with a large flap of material to keep draughts out. The cuff is elasticated to keep the wind from slipping up the sleeves, and the collar is nice and high to keep you snug on a cold winter ride.

Assos iJshaqUno Jacket - collar.jpg

Around the back are three regular sized pockets. There are some 3M reflective details dotted around the jacket, including high up on the shoulder and lining the main zip. The waistband features a large elastic band and there are silicone details to help anchor the jacket in place.

Assos iJshaqUno Jacket - pocket.jpg

It's not cheap, and there's a fair amount of competition at this price, but the iJ.shaqUno does provide the necessary performance to allow you to tackle cold winter rides in total comfort.


Excellent cold-weather jacket provides impressive warmth with great fit and comfort test report

Make and model: Assos iJ.shaqUno Jacket

Size tested: Medium, Black/White

Tell us what the jacket is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Assos says: "Within the ASSOS winter jacket collection, the shaQ is unique, featuring a double-face construction. Layer ONE, the next-to-body layer is made of the legendary ASSOS RX soft fleece bi-elastic material that contours to your body the way you want and need it to. This layer offers superb insulation and advanced moisture-wicking properties. Layer TWO is a body-mapped protection shell. These two layers are NOT bonded but strategically attached, creating a sensation of total freedom of movement. The size of the layers is slightly different, each carefully calibrated to create an air chamber between the layers that functions as a heat regulating system. Excess moisture is transferred effectively to the outside by the jacket's ventilation system"

Tell us some more about the technical aspects of the jacket?

Strong little warrior!

_ "Welcome, thank you" retail price point

_ Extended climaRange

_ TWO in ONE: Cozy contouring layer next to body, protective shell outside

_ Natural air-chamber body-heat-regulating system

Rate the jacket for quality of construction:

Assos has a good reputation for high-quality construction and that much is apparent in this jacket, it's beautifully well made.

Rate the jacket for performance:

For combating the cold with just a baselayer underneath, the jacket is highly impressive.

Rate the jacket for durability:

No concerns with durability highlighted during my time testing it.

Rate the jacket for waterproofing, based on the manufacturer's rating:

It isn't described as a waterproof jacket but the treatment to the outer shell sees rain beading off the surface; it's enough to look after you in a shower.

Rate the jacket for breathability, based on the manufacturer's rating:

The breathability, even during more intense workouts, was one of the standout features. You don't have to layer up so much and that makes it easier for sweat to escape, and the inner layer of the jacket stays dry.

Rate the jacket for fit:

I found the medium a good fit; it's not a race tight fit but neither is it too relaxed, striking just the right balance. The extra fabric on the arms does create a slightly baggy appearance.

Rate the jacket for sizing:

The sizing range is pretty honest, with the medium comparing well to other brands.

Rate the jacket for weight:

It's a very lightweight jacket and it feels very light when you're wearing it.

Rate the jacket for comfort:

Yes, it is very comfortable.

Rate the jacket for value:

Well, this is where Assos does fall down a bit, but you're getting a lot of performance for the money.

How easy is the jacket to care for? How did it respond to being washed?

Yes, very easy to care for.

Tell us how the jacket performed overall when used for its designed purpose

Does what it sets out to do.

Tell us what you particularly liked about the jacket

The fit and comfort.

Tell us what you particularly disliked about the jacket

The performance comes with a hefty price tag.

Did you enjoy using the jacket? Yes

Would you consider buying the jacket? Yes I probably would.

Would you recommend the jacket to a friend? Yes

Use this box to explain your score

It's not cheap, and there's a fair amount of competition at this price, but the iJ.shaqUno does provide the necessary performance to allow you to tackle cold winter rides in total comfort.

Overall rating: 8/10

About the tester

Age: 31  Height: 180cm  Weight: 67kg

I usually ride:   My best bike is:

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: road racing, time trialling, cyclo-cross, commuting, touring, mountain biking

David worked on the tech team from 2012-2020. Previously he was editor of and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds, and you can now find him over on his own YouTube channel David Arthur - Just Ride Bikes

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LeighNichol | 8 years ago

Just had a DHB ASV windslam delivered, worn it for the last two days in the gale force winds and blustery showers. Only a mesh baselayer underneath, it keeps me warm and dry, breathes really well, lovely snug fit, looks good too. Amazing bit of kit. The best bit? Cost me £42. Not got a problem with anyone spending £195 but it does seem bonkers when it's not necessary...

bendertherobot | 8 years ago

Had a look at this in cycle surgery once. I've owned a lot of Assos stuff. To me, this felt and looked cheap. Nowhere near the quality of the Bonka. Or, clearly, the price. 

turboprannet | 8 years ago
1 like

their product names read like an Aphex Twin b-side playlist.

Darkhairedlord | 8 years ago

looks a bit baggy to my eyes.

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