I've just bought the Knox Urbane Pro MK3 men's jacket in silver chain mail, and I look like a knight in shining armour, only kidding, it's more greyish than silver. I've got about a 42.5" chest, and I'm usually a large, but I had to buy the XL size (see pics). The problem I always have is that I've got wide shoulders, so sometimes clothing is a bit tight around that area. Plus, I also bought the chest armour for added protection, you have to factor that in as well. The jacket is very impressive, it's excellent quality, and best of all it's from a UK based company, Planet Knox, who are based in Cockermouth, Cumbria. I tested it out on the first really hot day we've had in 2026 in the UK, and what a result! I was very impressed with the airflow and the light weight, even with all the armour fitted. It was about 23°C in the shade, and I rode the whole afternoon for a good few hours in the hot sun wearing just the jacket. You could feel the airflow around your body; it kept me very cool, and it was extremely comfortable to wear. The jacket also looks great when you've got it on, as well, and I also like the way I'll be able to layer the garment up with my other gear when the seasons change. It means I'll be able to take the armour out of my leather and my Gore-Tex textile jacket, and wear the Urbane Pro underneath as base layer. Every other "summer" motorbike jacket I've bought has made me sweat like a pig, and that includes my very expensive Klim Marrakesh! They simply didn't have the airflow of the Knox Urbane Pro because of their design and the materials used. After many expensive failures over the years, I've found what seems to be my perfect summer jacket, and at last my search is finally over. I highly recommend this summer mesh jacket if you're looking for one, it's well worth the money. Good luck, and ride safe.