I accidentally bought this jacket thinking it was waterproof. It's not! It doesn't claim to be.
But it is very good. Clearly designed for cyclists, the arms are a good length, there's a longer tail section, and it is extremely lightweight.
The fabric is very nice to the touch. The first few drops of water bead nicely but that's about as far as the water repellancy goes. Seems v breatheable though.
To be honest it's so light and soft that you can chuck it on over a T-shirt and hardly notice you're wearing it.
Very bright colour (green). I wish there were some reflective strips on the arms or back, though. There is only a tiny logo on the tail flap. That's my only gripe!
By the way, size charts are here:
I went for a size larger than my measurements and it fits well.