Here are some pictures of it on the bike:
and on another bike (this for which it was designed)
And because of the reflective on it, this is how it might appear to a car driver at night:
and from the side:
And here is what it is called and how I got the idea and why Helen Lloyd and That Emily Chappell are Godesses Of The Cycling World:
It's called a pogie and Ms Lloyd had some on her trip round northern Norway with Shane Cycles in midwinter when it was minus 20c. I might copy that idea next December, and found on t'interwebs an idea of making it from a charity shop winter jacket. The one I bought cost £3.95 and three or four evenings at the sewing machine.
So there you are. If anyone of all the billions on t'interwebs sees this and thinks it's a good idea, my life will not have been in vain.
That Emily Chappell (a quick Google comes up with her most excellent blog) is off to Alaska. Helen has offered to lend her some of these. I like mine: I made them my own self.