Good choice - my preferred jacket at this time of the year. Loose fit, windproof front & normal jersey like fabric on the back for body heat dispersion. May have to get one in as a spare.
Thanks to Elysian for recommending this. I went for one. It's great and a great partner to the
Altura Varium which a fair few of us on here picked up cheap a while ago. In response to the mini debate which seems to have opened on this downthread I too like stuff slightly loose - I am no racing snake, have no wish to be (some of those folk look like their health is on a knife edge) and its fitting allows for nice warm stuff under the shell. My Airstream and Varium are great paired with an Aldi merino wool base layer and a buff tucked in - Polartec for the particularly cold London days.
Like the Varium it blocks wind very well but you need to be moving at a fair crack for the top to do its stuff. You need to generate heat. I have worn these things sometime on tootly social rides round London in the cold and you do start to freeze. This is not a criticism of the Airstream or the Varium - they are both great. If only the Airstream had a small zip pocket on the front like the Varium it would be perfect.
I like Altura stuff - they use some excellent materials these days and I find their stuff pretty stylish without being bonkers-so. And good value, particularly if sourced through this thread where their stuff very often pops up. They seem to have stabilised their sizing these days as well which means I can pretty safely buy stuff untried.
Ride on slightly baggy crew and thanks again for the original notice of this and you jenkins for the good review which pushed me.