Slightly relaxed jersey

Some , but not all, of the
Some , but not all, of the Mavic jerseys are slightly more relaxed. You can tell the difference because they kindly put the word Relax in the name of the product for you. 😀
http://www.mavic.com/en/product/apparel/jerseys/apparel

To rip open a can of worms
To rip open a can of worms and throw a cat among the pigeons plus any other cliche you can think of, there is of course the Rapha Sky one for £40.

Yes. Endura Hummvee jersey.
Yes. Endura Hummvee jersey. http://www.endura.co.uk/Product.aspx?dept_id=124&prod_id=273
Nice jersey with all the features but a relaxed fit. Good value too as Endura are big enough now to produce decent quality at a good price. I have had a red one for a couple of years but there’s a choice of colours. The lime green is groovy. And there’s now a Hummvee Lite jersey that is very similar except for being lighter weight, so is nice for the summer.