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Imagined by David Millar and created by Castelli, CHPT3 is pure racing heritage for non-racers. Inspired by life in the pro peloton, it's the ultimate cycling collection for the more discerning rider.

David Millar started working with Castelli in 2006, developing pro race apparel, they worked together, all the time pushing the envelope, and in the process creating the benchmark for racing tech today. When David's Pro cycling career came to an end he realised he would no longer have that relationship, "I’d have to wear clothing somebody else had designed. I didn’t want that. I wanted to create cycling clothing that was constructed for my new life as a non-racer, only designed for riding, not racing, but still with the latest tech and with a collaboration that I’d always known". 

This is David's vision for cycle clothing beyond racing. This is the next chapter. This is CHPT3.


In 2015, the Chpt3 project provided the newly-retired David Millar, and designer Richard Pearce, with the opportunity to work alongside long-time sponsors to create something truly different and exclusive. 

A collaboration with Castelli launched the brand; a collection of lovingly designed cycling garments that fuse the latest material technology with a sartorial elegance opposed to the billboard stylings of the peloton. The result is the ultimate in both performance cyclewear and coffee-stop chic.



The 1.31 Jersey/Jacket can be considered both a jersey and a jacket, being able to handle a large temperature range. The reason for this is the material used, it is a 3-ply fabric, meaning it is constructed by bonding three layers of differing fabrics together with a foam core. That core not only gives the 1.31 J/J its performance advantage but the unique look, it bears a striking resemblance to a 1980s diving jacket, or similarly a sci-fi biker jacket. There is nothing else like it out there. 

 The performance advantage is due to the fact the foam wicks the sweat away from the body while also providing wind protection without compromising the breathability, this is why it can handle such varying conditions. The piping around all the seams is there for performance reasons as it prevents the three fabrics separating at the edges where it has been cut, although there were purely practical reasons for this it has also added to the overall look of the J/J. 

The cut of the J/J is more like a jersey than a jacket, allowing it to be more fitted than a jacket normally would be, there are three rear pockets and also a vertical chest pocket with a zipper closure. The zip for this pocket and the main zip are quite chunky yet lightweight, it made sense to have a zip that had a bit more presence than normal in order to fit with the aesthetic. The neck line is slightly higher than a jersey, more like a jacket, everything about this garment is difficult to define apart the performance, which has created its own definition the Jersey/Jacket.

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