CHPT3 is pure racing heritage for non racers. 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".