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Founded by athletes with a passion for performance

Complimentary worldwide delivery on all orders over £150



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Chest 38-40 40-42 42-44 44+
Back length 29 30 30 31
Front length 27.0 27.5 28.0 28.5
Sleeve length 35 36 37 37
Chest 100 105 110 115
Back length 75 76.5 78 79.5
Front length 69 70.5 72 73.5
Sleeve length 90.5 92.25 94 95.75

The Rix jacket benefits from a bespoke fit unlike any lightweight sports jacket in the market. The arms are cut to sit close to the body whilst maintaining sufficient ventilation with the torso demonstrating a slightly more relaxed fit to allow multiple layering.

Rix – Midnight black


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The Rix jacket is the ultimate hybrid garment, supporting you through your most intense workouts. Super light, versatile with advanced water resistance and unrivalled breathability.

  • s
  • m
  • l
  • xl

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Designed for those athletes who continue to train no matter what the conditions. The Rix jacket, with fully taped seams and laser cut ventilation provides an optimal combination of advanced water resistance and unrivalled breathability. Crafted from an ultra lightweight, tri-dimensional fabric and treated with cutting edge High IQ technology, we have left no stone unturned in our desire to create the most technically advanced sportswear jacket in the market. Tailor cut to an athletic profile, the Castore ergomomic construction maps key muscle groups to optimize comfort and ventilation, whilst leaving room for layers. The micro-suede lined pack away hood has an aerodynamic fit, treble bonded brim and self-locking adjusters allowing for adjustment with one hand and providing you full coverage without restricting movement or visibility.

"The Rix jacket is the lightest, most durable and highest performing sports jacket in the world right now" GQ

Product details

Patented warp knit fabric treated with High IQ, provides a hydrophobic finish on the outside and hydrophilic finish on the inside to give enhanced water and dirt resistant properties and unrivalled breathability. A full length laser cut zip placket and taped seams throughout provide additional wind and water protection. The shaped cuffs are bonded with microsuede for additional comfort and warmth, whilst the elasticized bottom hem seals out drafts and the laser cut under arm eyelets ensure consistent airflow. A hidden two way YKK zipper provides enhanced body temperature regulation.

The Castore ergonomic stormhood is designed to provide ultimate protection in all weather conditions. Treble bonded brim and self locking adjusters secure tightly and provide full coverage without restricting visibility, while the microsuede lining provides additional warmth. The hood packs away and stows nicely into the crafted bonded slit.

The tridimensional structure of our fabric allows for a slim, athletic cut providing an enhanced range of motion in all environments. We have incorporated a curved dropped hem and raglan sleeves allowing for the ultimate athletic fit. The Rix jacket was designed to be worn over a simple tee or multiple layers, catering for all conditions.

The patented warp knit fabric construction means that despite the high number of grams per metre, our specialist fabric is 50% thinner than other fabrics of similar weight making it highly breathable, lightweight and durable. The Rix jacket is also seam free and uses narrow Bemis tape to reduce weight, increase breathability and create the ultimate free flowing performance jacket.

Hydrophilic finish providing exceptional moisture transfer
Dirt repellent

Taped seams for added weatherproof protection
Laser cut eyelets for ventilation
Laser cut zip guard
Castore ergonomic fit for comfort and mobility
Raglan sleeves
Two way hidden zipper
Enhanced dropped hem

Treble bonded rim
Self locking adjustable hood cords
Micro-suede lining for comfort and warmth
Ergonomic fit for visilbity and motion
Magnetic fastning

Internal bonded chest pocket
Internal stretch phone pocket with laser cut media hole
Two high volume hand pockets
Hidden credit card slit
Media loops

Micro-suede lined inner cuffs for warmth and comfort
Shaped cuffs for enhanced coverage
Micro-suede lined collar for warmth and comfort

Dropped hem for enhanced coverage
Adjustable drawcord with drawcord tabs

Reflective piping
Stitched brand label
Heat transfer branding and care label

Fabric composition

Body: 80% Polyamide/ 20% Elastane
Trim: 100% Microsuede


Washing instructions

Machine wash cool (30°)
Wash dark colours separately
Do not use fabric softeners
Do Not Tumble Dry
Cool iron (one dot)
Do not bleach
Do not dry clean


  • Great design and super comfy

    Anthony - August 15, 2016

    Amazing product and speedy delivery. Very light and the fit is great and love the removable hood. Went for a 10k run in it yesterday and it performed great.

  • New favourite

    Lui C - September 6, 2016

    Decided to buy this last week ready for a change in temperature and was keen to try out some of the technologies... I've used many different running jackets and I can honestly say nothing has ever performed as well at this piece of kit. Fit is excellent and allows for a couple of layers underneath (it is a slightly more relaxed fit than the Warwick tee which I also brought) , and allowed for a really comfortable two hour run. The water proofing worked excellently in consistent light rain, it doesn't hold water, it just beads off and is extremely lightweight meaning I didn't overheat at all. Also never come across a jacket with such a well-designed removable hood which stows away in one of the many pockets. Excellent jacket all round.

  • Better than any running jacket i've ever owned

    Joseph Paul - November 24, 2016

    Brought the jacket after seeing it voted as the best 10 running jackets in runners world. I've worn it for long runs where it performs really well, the fabric feels beautiful against the skin and is lightweight so doesn't weigh you down. The details are very stylish as well, particularly the silk merino fabric at the cuffs and neckline which add a touch of class. The is numerous storage, with hidden pockets that are really useful for various things whilst out on a training run and a lot of thought seems to have gone into the design. I also really like the adjustable hood which is not something I've seen before.

  • Excellent

    Jens - December 21, 2016

    Purchased after reading about it in GQ and I have to say it is the best sportswear jacket I have ever owned. I have worn it skiing, running and in the gym.

  • Go to product!

    Andy M - January 5, 2017

    I absolutely love this jacket. I'm 180lbs, 5'10" and a medium fits me perfectly. Has room to add layers but still looks and feels great with just a vest underneath. Customer service was delivered with a lot of warmth - I emailed in to clarify a delivery point and the response was very timely and proactive. Looking forward to them releasing new products.

  • Brilliant

    Yarin K - January 18, 2017

    Love everything about Castore

  • Full tracksuit

    Lane - January 20, 2017

    Bought from the US the Rix jacket & Henry trouser as part of the winter bundle. Arrived in two days with personal note. Worn it every morning to the gym in the last week. Ultra lightweight and great cut

  • Different level

    Alfonse - February 2, 2017

    Super light and comfy

  • Lightweight, comfy and very practical

    Daniel everson - February 15, 2017

    Ordered from US. Arrived in three working days in amazing packaging. Super lightweight and perfect for exercising in all temperatures.

  • Can't fault it

    Benjamin Lark - March 10, 2017

    Ordered from US and arrived in two days with free gift. Stylish, functional and worth every penny. Can't wait for the new collection

  • Becoming addicted to Castore

    Lars - March 10, 2017

    Bought from Switzerland after reading in GQ magazine. Arrived promptly with no problems with customs. The product itself realy is different level in terms of performance and attention to detail. Love the lining on neck and cuffs and I can wear in all seasons due to the fact it is super light.

  • Top product and service

    Jean Claude - March 11, 2017

    Not one for leaving reviews normally but everything about this product is different class from the personal note from the founders to the packaging and then the overall quality of the product which is outstanding

  • Super light and great details

    Angus - March 21, 2017

    Love everything about this. Super light and comfy and performs well in all weather. Wore it during a 1/2 marathon last week when it was 15 degrees one minute with sun and 2 degrees the next with rain and it worked well in both environments. Waiting for the Henry trackpants to come back into stock!

  • Great delivery, service and amazing product

    Heather L - March 22, 2017

    Ordered from New York for my husband for his birthday. Product arrived in two working days with free gift and handwritten happy birthday note. The top was perfect and he now loves everything about castore.

  • Great service

    Alfred Benjamin - March 29, 2017

    Very nice product and great service

  • Present

    Maria Sallis - April 12, 2017

    Bought full tracksuit as present for Husband - he absolutely loves it. Waiting for the navy pants to be back in stock to get more

  • Super lightweight

    Luke Walker - May 11, 2017

    Wear ever day running to work - love it

  • All round jacket

    Iain Lever - June 1, 2017

    Wear every morning on the run to work. Love every detail from the inside phone pocket to the branding on subtle branding on the back. Perfect weight meaning I wear even on warm days as a layer.

  • Pay for what you get

    Oscar - June 8, 2017

    The quality is outstanding. Can't take it off!

  • Exceeded expectations

    Marcon K - August 15, 2017

    Lightweight, robust and great fitting. Can't ask for much more from a performance jacket