For sale is my hardly used Sportful Fiandre Light Wind jersey, size XXL, as it is just too large. It only just fitted properly when I got it and quickly became too big for my diminishing girth. It has only been worn half a dozen times and washed gently with Grangers Performance Wash. As such it is in near perfect condition. I'm selling this to part fund the same jersey in the next size down.
How will it fit? For a tight 'race' fit I reckon you'd need at least a 43" chest and a 36" waist. Below that you'd be looking at a more relaxed fit, which is what it's like on me now.
This is an incredibly flexible piece of kit that works and breathes very well in a surprisingly large range of temperatures, depending on the baselayer it's paired with. An ideal jersey for fickle British weather. It sheds splashes and light showers well but I've never worn it in heavy rain so can't personally vouch for how waterproof it actually is.