The black detailing is the taping in the seams, which if you know your fabrics turns a soft-shell jacket into a very good waterproof piece. With the windchill it brought the riding temperature down to 0*c. Never once was I cold. The windproofing is excellent, riding into the headwind my upper body was protected from the elements.
Mavic might not be the first brand you'd think of when buying performance clothing, but if this jacket is anything to go by you should really add the brand to the 'check list'.
I'll come back with a fuller review once I've logged more kilometres, and in some variable conditions. But so far so good.